Half Moon Bay Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Half Moon Bay Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	7.637499999999999	11		13.05625	13.9
	7.637499999999999	11.3		13.625	13.5
	8.40625	13.3		13.5625	14.4
	8.362499999999999	10.7		14.06875	13.4
	8.4375	10.4		13.475	13.4
	7.98125	7.2		13.587499999999999	10.8
	8.368750000000002	10.2		13.393749999999997	12.2
	9.312499999999998	8.1		13.837499999999999	12.2
	9.043750000000001	4.1		13.693749999999998	13.8
	8.424999999999999	2.7		13.675	12.7
	8.687499999999998	4		13.756250000000003	14.9
	8.843750000000002	5.5		13.699999999999998	11.1
	8.549999999999999	4.1		14.562500000000002	14.6
	8.4375	6.8		14.543750000000001	13.4
Jan.	8.375	6.6		14.274999999999999	15.9
	8.799999999999999	8.4		14.312500000000002	18.3
	8.493749999999999	7.8		14.41875	16.1
	8.7875	12.6		14.674999999999999	21.7
	9.218749999999998	11.3		13.925	20.8
	8.89375	5.7		14.431249999999999	14.2
	8.137500000000001	9.1		14.131249999999998	11.9
	8.631250000000001	10.1		14.074999999999998	11.5
	8.35	7.8		14.481250000000001	9.9
	8.475000000000001	6.3		13.725	12.3
	8.56875	6.5		14.45	13.7
	8.6875	6.6		14.374999999999998	13.4
	8.56875	8.2		15.19375	13
	8.58125	11.2		14.74375	14.3
	8.662500000000001	7.1		14.156249999999996	13.6
	8.88125	5.6		14.2375	15.3
	8.80625	7.3		14.61875	16.5
	8.906249999999998	7.8		14.3875	13
	9.175	8.7		13.825	13.3
	8.887500000000001	6.7		13.6375	18.6
	8.24375	9.8		14.212500000000002	20.3
	8.25	11.2		14.150000000000002	19.8
	9.0625	10.8		15.093749999999998	15.6
	9.481249999999998	9.7		14.74375	10.9
	9.143749999999999	10.3		14.531249999999996	12.3
	8.706249999999999	11.1		15.075000000000001	15.6
	8.549999999999999	11.4		14.6375	13.2
	8.2875	10.9		14.631250000000001	11.9
	8.768749999999999	9.7		15.062499999999998	15.2
	9.3375	9.7		14.95625	10.7
	9.424999999999999	9.2		14.531250000000002	12.2
Feb.	9.256250000000001	10.9		14.881249999999998	12.7
	8.81875	9.2		14.9125	11.8
	9.01875	8.9		14.243749999999999	10.3
	8.38125	8		13.8375	9.6
	8.63125	8.3		13.181249999999999	9.3
	8.2	7.7		13.431250000000002	9.8
	8.118749999999999	6		13.76875	12.9
	7.89375	9.4		13.8375	15.2
	8.0375	9.8		13.643750000000002	16.1
	8.3	12.4		14.431250000000002	14.5
	7.93125	11.8		13.99375	13.4
	8.362499999999999	11.7		13.725000000000001	16.8
	8.25	11.7		14.362499999999999	17.9
	8.393749999999999	12.9		13.850000000000001	18.5
	8.700000000000001	11.4		14.1125	13.5
	9.25625	11		13.600000000000003	13.8
	8.918750000000001	10.5		13.29375	11.7
	8.587499999999999	10.3		13.600000000000001	14.9
	8.681249999999999	8.5		14.162499999999998	16.6
	9.093749999999998	9.9		13.600000000000001	18.5
	8.8125	7.3		13.66875	17.8
	8.5375	10.8		13.424999999999997	17.2
	8.58125	10.5		14.162500000000001	13.5
	8.887500000000001	9.3		14.956250000000002	16.7
	8.70625	9.3		14.89375	17.6
	9.474999999999998	8.1		14.593750000000002	16.6
	9.225000000000001	9.7		14.943749999999998	11.8
	9.575000000000001	10		14.881249999999998	13.5
Mar.	9.64375	9.5		14.568750000000001	16
	9.393749999999999	10.3		14.918750000000001	20.3
	8.731250000000001	9.2		14.693750000000003	20.5
	8.6875	11.6		15.043750000000003	21.1
	9.268749999999999	9.7		14.600000000000001	18.9
	9.381249999999998	11.8		13.887500000000001	19.5
	9.175	10.6		14.375	13.6
	9.487499999999999	9.4		14.624999999999998	13.9
	9.387500000000001	10.7		14.4875	16.4
	8.8625	9.9		14.424999999999999	20.2
	9.012500000000001	8.9		13.974999999999998	16.2
	9.168750000000001	9.5		14.325	16.3
	9.63125	10.4		14.5	18.3
	9.91875	7.5		15.168749999999998	14.9
	9.899999999999999	6.6		14.8125	14.1
	9.868749999999999	8.8		15.106250000000001	14.5
	9.862499999999999	11.4		15.718749999999998	14.9
	9.568750000000001	12.2		15.34375	15.1
	9.16875	9.8		14.400000000000002	17.5
	8.9125	8.7		14.637500000000001	24.8
	9.168749999999998	12.6		14.3	29
	9.35	11.1		13.906249999999998	22.5
	9.287500000000001	9.8		14.987500000000002	13.3
	9.9875	11.4		15.768750000000002	15.1
	9.518749999999999	11.4		14.9	18.1
	9.368750000000002	12.8		16.06875	17.6
	9.78125	13.2		15.7625	17.2
	10.01875	10.5		14.5625	17.8
	9.75625	10.3		14.243749999999999	14.6
	8.925	9.7		14.475	17.5
	8.96875	10.7		14.14375	13.9
Apr.	9.012500000000001	10.1		14.825000000000001	15.1
	9.256250000000003	8.9		15.206249999999999	20.8
	9.6	9.8		15.4625	22.4
	9.750000000000002	7.6		16.6125	18.5
	9.812500000000002	11.3		15.68125	17.8
	10.106250000000003	10.9		15.79375	18.4
	10.218750000000002	10.5		16.3375	15
	10.49375	10.4		16.549999999999997	16.8
	10.5	9.7		16.5	17.9
	10.78125	11.5		15.5125	14.1
	10.237499999999997	10.8		15.5625	13.4
	9.993749999999999	9.8		15.412500000000001	15.5
	10.20625	8.9		15.312499999999998	17.1
	9.85625	10.5		15.5875	15.7
	10.175000000000002	11.1		16.987500000000004	16.1
	10.78125	11		17.175	14.9
	10.81875	11.1		17.83125	13.5
	10.51875	11		17.5125	14
	10.737499999999999	11.4		17.18125	16.1
	10.518749999999999	11.9		17.037499999999994	16.2
	10.293750000000001	11.2		16.05625	15
	10.262499999999998	12.1		15.856250000000001	19.4
	10.33125	11.1		16.3625	14.8
	10.231249999999998	10.4		16.618750000000002	13.8
	10.206249999999997	10.8		16.7125	13.8
	10.3	11.2		16.2875	14
	10.174999999999999	11.2		16.943749999999998	15.8
	10.743750000000002	9.9		17.2375	13.6
	10.8	10.9		17.156250000000004	17.6
	10.693750000000001	9.6		16.225	19.6
May	10.806249999999999	10.1		16.1625	21
	10.80625	10.3		15.537500000000001	18
	10.693749999999998	9.1		15.424999999999997	21.2
	10.725	15.2		16.625	27.4
	10.775	10.4		16.69375	30.3
	10.50625	9.9		16.424999999999997	16.6
	10.625	9		16.3	16.6
	10.48125	8.9		15.975	14.7
	10.64375	11.4		15.725000000000001	16.1
	10.58125	11.7		16.062499999999996	16.7
	10.95625	11.2		15.631250000000001	14.5
	10.931250000000002	11.1		15.925000000000002	16.6
	10.806249999999997	10.3		15.88125	17
	11.143749999999999	11.5		16.362500000000004	16.2
	10.931249999999999	10.3		17.181250000000002	14
	10.918750000000001	10.5		16.46875	16.7
	10.837499999999999	9.1		17.55625	18.5
	11.1	8.6		17.525000000000002	16.1
	11.25625	10.1		17.49375	14.5
	11.53125	10.9		18.08125	22
	11.86875	11.5		18.40625	20.8
	11.975	9.7		18.34375	23.2
	11.868749999999999	10.5		17.368750000000002	17.2
	11.443750000000001	9.3		17.550000000000004	19.3
	11.825	9.6		18.29375	16.8
	12.05	10.9		18.28125	19
	12.3125	9.6		18.55	25.3
	12.43125	12.5		19.218749999999996	25.7
	12.54375	12.9		19.693749999999998	19.4
	12.156250000000002	11.3		18.8	18.3
	11.756250000000001	13.3		18.181250000000002	17.1
Jun.	11.64375	13.3		17.56875	18.1
	11.637500000000001	13.1		18.00625	16.9
	11.893749999999999	14		19.025000000000002	16.7
	12.156249999999998	13.2		19.28125	16.9
	11.74375	13.8		18.5875	17.6
	11.875	14.2		19.349999999999998	17.9
	12.1	12.5		19.84375	16.9
	12.231250000000001	12.1		19.0125	15.8
	12.31875	12.5		18.974999999999998	16.9
	12.0125	12.3		18.0125	16.5
	11.99375	13		18.175	16.3
	12.1875	12.6		18.9	15.6
	12.518750000000002	12.7		18.85625	17.8
	12.6	11.1		19.050000000000004	24
	12.125	12.6		19.1625	19.7
	12.387500000000001	12.5		19.256250000000005	16.2
	12.875	12.7		19.806250000000002	16.3
	12.88125	12.5		19.01875	17.3
	12.775	12		19.64375	17
	12.724999999999996	11.7		19.731250000000006	16.4
	12.9125	11.9		19.26875	17.7
	12.837499999999999	12.7		18.98125	14.8
	12.712500000000002	12.2		19.0125	14.5
	12.950000000000001	11.8		19.349999999999998	14.8
	12.668750000000001	12.2		19.075	15.7
	12.812500000000002	12		19.612499999999997	14
	12.593749999999996	11.1		19.606250000000003	17.6
	12.674999999999999	12.4		19.35625	20.6
	12.975000000000001	13.2		19.337499999999995	23.9
	12.612500000000002	12.7		19.056250000000002	23.2
Jul.	12.96875	11.6		19.79375	19.1
	13.1125	11.2		19.93125	18.9
	13.137500000000001	12		19.425	15.2
	13.131250000000001	12.2		19.462500000000002	16.7
	12.9875	12.2		19.606250000000003	16.7
	13.062499999999996	13		19.724999999999998	19.6
	12.94375	14		19.462500000000002	27.6
	12.95625	14.3		19.793750000000003	18.7
	13.312499999999998	13.7		19.8	17.3
	13.018749999999999	13.4		20.137500000000003	19.6
	13.3	13.4		20.049999999999997	20.2
	13.13125	13.4		19.493749999999995	17.4
	13.100000000000003	13.5		20.287499999999998	17.2
	13.162500000000001	14.2		19.799999999999997	19.2
	13.199999999999998	14		19.39375	16.5
	13.39375	13.7		19.28125	18.5
	13.425	13.3		19.6	18.3
	13.468750000000002	13.4		19.375	20.1
	13.3125	12.2		19.431250000000002	21.8
	13.418749999999998	12.2		19.65	18.2
	13.44375	12.8		19.23125	18.7
	13.356250000000003	13.4		18.843749999999996	17.6
	13.175	13.5		19.34375	17.4
	13.256250000000001	12.8		18.962500000000002	16.5
	13.224999999999998	13.6		19.0875	17
	13.2625	13.8		19.749999999999996	19
	13.549999999999999	13.4		20.162499999999998	17.5
	13.643750000000002	13.7		19.731250000000003	16.3
	13.450000000000001	13.9		20.006249999999998	18.8
	13.600000000000001	13.7		19.956250000000004	17.6
	13.843750000000002	14.7		20.131249999999998	17.1
Aug.	14.18125	13.8		21.28125	18.1
	14.362499999999999	12.8		21.106249999999996	18.9
	14.100000000000001		12.8	20.825		17.1
	13.949999999999998		13.4	20.293750000000003		17.4
	13.899999999999999		13.5	19.962500000000002		18.2
	13.856250000000001		13.6	20.00625		17.2
	13.725000000000001		13.6	19.44375		17.2
	13.83125		13.8	20.04375		17.2
	14.06875		13.6	20.475		16.9
	14.131249999999998		13.5	20.387499999999996		16.9
	14.012500000000001		13.8	20.28125		20.2
	13.893750000000002		13.9	20.643749999999997		20.7
	14.024999999999999		14.1	20.79375		21.5
	14.2625		14.4	20.893749999999997		21.4
	14.181249999999999		14.4	20.300000000000004		20.7
	13.9625		13.9	20.4375		20.3
	13.83125		13.7	20.668750000000003		20.4
	14.381249999999998		14.3	21.293750000000003		21.5
	14.756249999999998		14.9	20.906250000000004		21.6
	14.350000000000001		14.3	20.799999999999997		21.5
	13.99375		14.1	20.762500000000003		20.4
	14.093750000000002		13.9	20.749999999999996		21.4
	14.25		14.4	22.3375		22.5
	14.60625		14.7	22.037500000000005		22
	14.79375		14.2	21.85		21.4
	14.48125		14.4	21.224999999999998		20.8
	14.375		14.4	20.718749999999996		21.3
	14.431249999999999		14.5	21.08125		21.3
	14.125000000000002		14.1	20.1125		20.1
	13.831249999999999		13.7	19.731250000000003		19.8
	13.731250000000001		13.7	19.3875		19.1
Sep.	13.537500000000001		13.7	18.7625		19.1
	13.874999999999998		14	19.349999999999998		19.7
	13.618750000000002			19.2625
	13.968750000000002			19.49375
	13.999999999999998			20.775
	14.2375			21.287499999999998
	14.225			20.50625
	13.549999999999999			19.312499999999996
	13.2375			21.0625
	14.049999999999999			21.700000000000003
	14.2875			21.36875
	14.181250000000002			21.156249999999996
	14.262500000000001			21.2625
	14.34375			21.599999999999998
	14.018749999999999			19.818749999999998
	14.075			19.6
	13.774999999999999			20.325000000000006
	14.225			22.0125
	14.312499999999998			21.281249999999996
	14.15			21.437500000000004
	13.900000000000002			21.250000000000004
	14.2875			22.006249999999998
	14.006250000000001			21.18125
	13.556250000000002			20.6125
	13.4375			19.250000000000007
	13.4			18.95
	13.11875			18.875
	13.118750000000002			20.125
	13.293750000000001			19.8625
	13.350000000000001			20.375
Oct.	13.7875			20.4625
	13.65			20.306250000000002
	13.71875			20.000000000000004
	13.181249999999997			20.025
	13.24375			20.412499999999998
	13.175			18.875
	12.881250000000001			19.087500000000002
	13.0875			18.5625
	13.206250000000002			18.7875
	13.39375			19
	13.562500000000002			18.887500000000003
	12.606250000000001			18.762500000000003
	12.337499999999999			18.274999999999995
	12.85			18.81875
	12.43125			18.675
	12.16875			17.881250000000005
	12.3			17.818749999999998
	12.31875			18.481250000000003
	11.76875			17.956250000000004
	11.9			17.9375
	11.63125			17.637500000000003
	12.006250000000001			17.89375
	11.8375			17.531250000000004
	11.487499999999997			16.825
	11.000000000000002			17.15
	11.387499999999998			16.925000000000004
	10.55625			16.5
	10.875000000000002			16.8875
	11.49375			16.799999999999997
	11.275			16.368750000000002
	10.80625			16.5125
Nov.	11.01875			16.6
	10.90625			16.262500000000003
	10.981250000000001			16.28125
	10.537500000000001			15.131250000000003
	10.2625			14.887500000000001
	10.3125			15.69375
	10.44375			15.7625
	10.862499999999997			15.950000000000001
	10.625			15.15625
	9.787500000000001			15.487499999999999
	8.98125			15.58125
	9.4			14.8625
	9.518749999999999			14.69375
	9.15625			14.399999999999999
	9.475			14.575000000000001
	9.349999999999998			14.725
	9.78125			14.756249999999998
	9.94375			15.150000000000002
	9.762500000000001			14.362499999999999
	9.756250000000001			14.475000000000001
	9.712499999999999			15.09375
	9.70625			14.331249999999999
	9.68125			14.100000000000001
	9.13125			13.8
	9.187499999999998			14.625000000000002
	9.337500000000002			14.587499999999997
	8.824999999999998			14.518749999999999
	9.0625			13.749999999999996
	9.25625			13.5125
	8.76875			13.481250000000001
Dec.	9.0125			13.225
	8.493750000000002			13.968750000000002
	8.475000000000001			13.931249999999999
	9.4875			13.650000000000002
	9.25625			13.437499999999998
	8.5125			13.637500000000001
	9.4125			14.06875
	10.0375			14.043750000000003
	9.46875			13.91875
	9.362499999999999			13.868749999999999
	8.70625			13.5375
	8.3625			12.831249999999997
	8.08125			12.4125
	7.7124999999999995			12.975
	8.33125			13.55
	8.38125			13.1125
	7.586666666666668			12.626666666666667

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

30°C

Highest Temp

19 May 26

3°C

Lowest Temp

10 Jan. 26

Seasonal Breakdown

Hottest MonthJune18.48°C

Coldest MonthJanuary7.99°C

Wettest MonthFebruary11.92mm

Windiest MonthFebruary23.36km/h

Half Moon Bay Climate Change InsightsSee how climate patterns are evolving over time. Temperature shifts, rainfall trends, and extreme events—all in one place.

Weather City Ranking GloballyExplore Real time of the world’s hottest & Coldest Cities based on current temperature data.

Frequently Asked Questions

1. What is the hottest month in Half Moon Bay historically?

September is historically Half Moon Bay's hottest month, with average maximum temperatures around 21°C. During peak heatwave events, the highest recorded temperatures have reached 33°C on 2017-09-01.

2. What is the coldest month in Half Moon Bay historically?

January is Half Moon Bay's coldest month, with average minimum temperatures around 9°C. The all-time record low of 2°C was recorded on 2013-12-09.

3. What is the average annual rainfall in Half Moon Bay over the past 17 years?

Half Moon Bay's average annual rainfall is approximately 630.06mm, based on records spanning 17 years.

4. How many rainy days does Half Moon Bay experience on average per year?

Half Moon Bay historically records approximately 92 rainy days per year. December has the highest number of rain days at an average of 12.5 days.

5. What is the all-time highest temperature ever recorded in Half Moon Bay?

The all-time highest temperature recorded in Half Moon Bay is 33°C on 2017-09-01.

6. What is the all-time lowest temperature ever recorded in Half Moon Bay?

The all-time lowest temperature recorded in Half Moon Bay is 2°C on 2013-12-09.

7. What is the windiest time of year in Half Moon Bay historically?

Half Moon Bay experiences its strongest winds during April. The historic gust record of 58.3 kph was recorded on 2025-12-25.

8. What is the highest and lowest humidity in Half Moon Bay during a year?

Usually, Half Moon Bay's humidity peaks in August at around 83.8% and drops to its lowest in November at approximately 71.9%.

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Half Moon Bay Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Half Moon Bay Weather Trend Graph

Yearly Summary 2026

Seasonal Breakdown

Frequently Asked Questions

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Half Moon Bay Historic Weather RecordsAnalyse hottest, coldest, windiest & wettest days

Half Moon Bay Weather Trend Graph

Yearly Summary 2026

Seasonal Breakdown

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World Top 10 Hottest Cities Are All in India Again - May 2026

Delhi Air Quality 2026 vs 6-Year Historical PM2.5 Data

What 17 Years of Delhi Temperature Data Reveal About May's Heatwave Escalation

World Top Hottest Cities Belong to India - April 2026

Construction Air Pollution: The Invisible Hazard Reshaping India's Urban Air

Kitchen Air Pollution: How Cooking Can Spike Your Indoor AQI

Mumbai Air Quality Comparison of 2025 Vs 2026 (Jan-Feb)

Why AQI Standards Vary Across the World - And Why Air Quality Index Matters More Than Ever

Why Winter Suffocates and Monsoon Saves Delhi Air Quality 2025?

Winter vs Summer Air: Why Air Pollution Behaves So Differently Across Seasons

Half Moon Bay Historic Weather Records
Analyse hottest, coldest, windiest & wettest days