Cornwall Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Cornwall Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-7.1375	-14.3		-1.3312500000000003	-9
	-10.075000000000001	-15.9		-2.575	-8.2
	-10.318750000000001	-14.3		-4.074999999999999	-10.9
	-9.5	-14.7		-1.9312500000000004	-10.8
	-9.593750000000002	-17		-3.6687500000000006	-9.8
	-10.00625	-10.9		-3.3312500000000003	-4.5
	-12.093749999999998	-3		-4.64375	-0.5
	-11.681249999999999	-0.8		-4.206250000000001	0.9
	-9.918750000000001	-5.2		-2.725	5.7
	-10.325000000000003	-2.8		-1.4562500000000003	3.4
	-8.024999999999999	-5.5		-2.1	0.6
	-9.05625	-8.8		-0.8750000000000001	-0.5
	-10.6625	-1.5		-3.4187499999999997	1.8
	-12.493749999999999	-2.9		-4.7375	2.1
Jan.	-11.75	-15.9		-5.25	-1.2
	-12.11875	-15.9		-2.66875	-8.3
	-12.662500000000001	-7.3		-4.3999999999999995	3.1
	-10.487499999999997	-10.6		-2.5687500000000005	-2.1
	-11.518749999999999	-12.2		-3.4250000000000003	-4.2
	-13.700000000000001	-16		-5.69375	-9.7
	-15.456249999999999	-12.4		-8.368749999999999	-5.1
	-15.19375	-5.8		-6.425	-0.7
	-12.412500000000003	-16.1		-4.93125	-7.5
	-13.6875	-22.6		-4.525	-15.1
	-11.631249999999998	-18.5		-3.4875000000000003	-13.4
	-10.768750000000002	-15.1		-4.825	-10.2
	-9.925	-15.6		-2.3625000000000003	-9.1
	-11.837500000000002	-15.4		-3.4812499999999993	-8
	-12.575	-13.4		-5.5625	-9.2
	-14.912500000000003	-20.9		-6.0874999999999995	-15.2
	-14.325000000000001	-20.2		-5.025	-14
	-12.725	-19.3		-3.8687500000000004	-9.5
	-12.031250000000002	-19.4		-4.449999999999999	-4.2
	-12.1	-11		-3.09375	-3.1
	-11.224999999999998	-9.6		-3.375	-5.9
	-13.4	-10.6		-3.5	-7.2
	-13.156250000000002	-12.2		-3.9999999999999996	-5.2
	-11.35	-19.5		-3.2125000000000004	-6.2
	-12.45	-23.7		-4.0125	-15.6
	-12.299999999999999	-20.3		-4.556250000000001	-8.7
	-9.9	-11.1		-3.5437500000000006	-3.8
	-11.631249999999998	-6.4		-4.1375	-2.4
	-13.41875	-9.5		-4.425	-5.6
	-13.8625	-13		-4.7250000000000005	-3.1
	-12.73125	-8.6		-4.6937500000000005	-1.4
Feb.	-11.312500000000002	-15.8		-2.8499999999999996	-3.4
	-10.600000000000001	-6.8		-2.2625	0.7
	-12.093749999999998	-0.1		-4.05625	2
	-12.575	-6.2		-2.4	-0.8
	-11.193750000000001	-12.3		-1.6812500000000001	-1.3
	-10.674999999999999	-6.6		-2.53125	-3.3
	-10.281250000000002	-8.4		-0.4687499999999997	-4.8
	-8.3625	-11.4		-0.28750000000000014	-0.4
	-7.8625	-6.9		0.8500000000000002	-2.2
	-8.01875	-15.8		-1.04375	-8
	-8.299999999999999	-11.7		-0.53125	0.3
	-10.34375	-10.4		-2.962499999999999	-3.3
	-9.143749999999999	-7.4		0.4374999999999999	2.2
	-8.462499999999999	-2.3		-0.03750000000000018	3.1
	-9.3125	-11		-0.28125000000000006	-7.1
	-10.512499999999998	-16.4		-2.28125	-6
	-10.7125	-10.1		-2.1000000000000005	2.4
	-9.49375	-1.9		-2.325	1.4
	-9.28125	-4.7		-0.9000000000000005	0.4
	-9.256250000000003	-7		0.23749999999999966	0
	-7.675000000000001	1.4		-0.05000000000000008	9.4
	-6.7625	1.9		1.2125	9.2
	-5.937500000000001	2.4		2.4749999999999996	12.2
	-3.912499999999999	2.7		4.256250000000001	8.5
	-2.775	-1.7		4.1	9
	-6.08125	-3.7		1.58125	-0.4
	-6.15625	-5		2.0937500000000004	1.3
	-4.2625	-3		3.2874999999999996	0.4
Mar.	-3.6812500000000004	-6.2		3.7624999999999997	0.7
	-4.9937499999999995	0.7		3.05	16.4
	-5.3875	-8.3		3.6374999999999993	1.8
	-5.218750000000001	-10		4.025	-2.3
	-5.3	-3.4		3.8812500000000005	4.7
	-3.63125	-1.5		5.5687500000000005	3.8
	-2.9687500000000004	-2.9		5.687500000000001	2.6
	-5.0062500000000005	-1.2		3.6000000000000005	0.8
	-5.5125	-5.2		3.0187499999999994	1.4
	-4.262499999999998	-5.4		4.05	1.2
	-4.05625	-1.8		4.53125	4.4
	-3.9812499999999997	-1.4		3.96875	10.1
	-4.9125	-5.5		5.0625	1.3
	-2.5375000000000005	-8.9		5.15625	-2.6
	-2.2874999999999996	-3.9		4.96875	6
	-2.15	3.3		5.768749999999999	13.7
	-1.2499999999999998	1.5		7.893750000000001	11.9
	-1.6187500000000001	0.2		6.4937499999999995	4.6
	-2.1625	-0.6		7.781249999999999	6.6
	-0.8125	3.4		9.24375	19
	-1.1	2.2		6.90625	9.4
	-1.5437500000000002	1.2		6.6125	10.4
	-0.5562499999999999	-0.2		6.675000000000001	3.2
	-0.31250000000000017	-3.9		8.237499999999999	-0.6
	-0.5875	-6.9		8.3625	10.4
	-0.7625	-0.6		8.9125	22.6
	1.2062499999999998	5.5		10.931249999999999	10.7
	1.8062500000000004	1.6		10.537500000000001	8.1
	2.19375	-0.5		11.575000000000001	15.3
	3.175	5.7		13.137499999999998	16.2
	2.53125	6.7		12.825000000000001	11.2
Apr.	0.98125	4.8		11.112499999999999	9.8
	1.6875	7.2		10.43125	20.1
	1.9249999999999998	8.7		10.975000000000001	18.1
	1.3874999999999997	4.8		11.931249999999999	27.5
	2.2562499999999996	1.3		11.587499999999999	5.9
	2.05625	-0.4		10.76875	4.4
	2.3125	-4.2		11.812499999999998	12.5
	2.1875	3.7		12.15625	19.7
	1.44375	2.3		11.862499999999999	17
	2.1874999999999996	-0.4		12.518749999999999	15.5
	2.5437499999999997	0.8		13.043750000000001	17.3
	2.80625	1.5		11.16875	20.5
	2.4375000000000004	2.3		12.943749999999996	24.9
	3.2375	7.5		14	25.6
	3.8375000000000004	12.5		13.375	16.8
	2.8812499999999996	3.6		12.543750000000001	8.4
	4.0249999999999995	1.8		15.349999999999998	10.8
	6.856249999999999	3.6		16.10625	9
	6.906250000000001	0.2		14.718749999999998	11.8
	6.875	5.4		15.99375	22
	5.9125000000000005	9.3		15.925	22.8
	6.18125	6.6		16.98125	9.9
	4.987500000000001	3.9		16.2625	11
	5.175	3.1		16.55625	11.6
	5.6	1.8		15.118749999999999	20.9
	5.787500000000001	6.9		16.487499999999997	15.7
	5.031250000000001	3		15.162500000000001	12.6
	5.8687499999999995	1.3		17.293750000000003	15.3
	6.35	5.7		18.324999999999996	12.4
	7.706250000000001	6.9		17.90625	13.6
May	7.9937499999999995	10.4		18.8625	19
	7.98125	7.8		18.318750000000005	25.4
	7.487500000000001	13		17.78125	25.8
	6.956249999999999	10.4		18.856250000000003	24.7
	8.075000000000001	17.8		19.150000000000002	29.2
	8.96875	8.7		20.0375	18.2
	10.237499999999999	4.8		21.625	17.3
	10.318750000000001	2.8		21.099999999999998	22
	9.83125	5.7		20.85625	25.5
	9.343750000000002	10.5		19.7625	15
	9.63125	11.9		21.062499999999996	20.2
	12.0625	10.9		22.35625	29.7
	11.475	15		21.65	24
	11.09375	12.1		22.212500000000002	19.1
	11.93125	8.5		21.887499999999996	19.7
	12.05625	8		23.706249999999997	19.8
	11.49375	7.8		21.68125	20.7
	11.181250000000002	6.4		20.637500000000003	23.3
	10.756249999999998	7.6		20.925	26.7
	10.556249999999999	9.7		20.000000000000004	29.7
	10.6875	12.2		21.325	29.9
	11.4375		14.1	20.656250000000004		30.8
	11.21875		16.5	20.531250000000004		19.1
	11.706249999999999		10	21.599999999999994		19.9
	11.69375		8.3	21.731249999999996		24.3
	11.768750000000002		11.7	21.2875		26.7
	11.76875		14.4	21.062500000000004		28.2
	12.04375		16.6	21.1625		29.3
	12.474999999999998		17.6	22.35		30.3
	12.03125		11.4	21.306250000000006		21.1
	10.756250000000003		10.6	19.6625		20.3
Jun.	10.456250000000002		10.8	22.249999999999996		22.4
	11.675		11.7	22.762499999999996		23.4
	11.981250000000001		12.7	23.712500000000002		24.6
	13.5375		14	24.73125		24.7
	13.4		14	24.40625		24.1
	13.25		13.4	24.437500000000004		24.4
	14.706250000000002		14.3	24.631249999999998		23.8
	14.6125		14.3	25.3625		24.7
	15.3		15.1	24.90625		25.2
	15.656250000000002		15.1	25.331249999999997		24.9
	14.887499999999998		14.9	24.256249999999998		24.7
	14.231250000000001		14.3	24		24.1
	14.15		14.7	23.781249999999993		23.6
	15.262500000000003		14.8	23.5125		23.9
	14.5375		15	23.69375		23.3
	15.175000000000002		14.9	24.575		24.9
	15.874999999999996		15.7	25.4375		25.3
	15.825		15.9	25.243750000000002		25.1
	15.181250000000002		15.3	25.39375		25.5
	15.068749999999998		15.2	26.587499999999995		26.3
	16.30625		15.7	27.7875		27.3
	16.93125			27.36875
	16.393749999999997			25.825
	15.98125			26.193749999999998
	15.393749999999997			25.506249999999994
	15.850000000000001			26.3375
	16.187500000000004			26.69375
	16.175			26.337500000000002
	16.88125			26.581250000000004
	17.55			26.625
Jul.	16.73125			27.043750000000006
	17.30625			27.2125
	17.36875			27.125000000000007
	16.81875			26.075000000000003
	16.58125			26.6875
	16.65			27.04375
	16.474999999999998			25.824999999999996
	15.6125			25.443749999999994
	16.231250000000003			26.125
	16.525000000000002			25.3625
	15.918750000000001			24.856250000000003
	15.537499999999998			25.787499999999998
	16.400000000000002			26.1
	16.906249999999996			26.15625
	16.325			25.2375
	15.606250000000003			24.95
	15.075			25.3375
	15.58125			25.462500000000002
	15.61875			26.00625
	16.475			26.937500000000004
	17.03125			26.256249999999998
	16.362500000000004			26.418749999999996
	15.8875			26.44375
	15.8			24.418750000000003
	15.637500000000001			25.087500000000002
	15.937500000000004			25.874999999999993
	16.5125			25.837499999999995
	16.568749999999998			26.431250000000002
	16.78125			25.931250000000002
	16.06875			25.231250000000006
	15.200000000000001			24.36875
Aug.	15.35625			24.631250000000005
	15.2			25.33125
	15.706249999999999			25.4625
	15.756250000000001			24.75625
	15.250000000000002			24.8875
	14.612499999999997			25.787499999999998
	15.231250000000003			24.956249999999997
	15.043750000000001			23.431250000000002
	14.231250000000001			23.85625
	14.8			25.393749999999997
	15.424999999999999			24.8125
	15.5125			24.181250000000002
	14.462499999999999			23.8625
	14.831249999999999			24.006249999999998
	14.956249999999999			24.2875
	14.125			23.41875
	13.8875			23.70625
	14.3875			23.61875
	14.95			24.79375
	15.34375			23.6125
	14			23.906250000000004
	13.706250000000002			22.956250000000004
	13.35625			22.91875
	13.962499999999999			23.043749999999996
	12.899999999999999			21.956249999999997
	12.024999999999999			21.5625
	11.968750000000002			21.41875
	12.612499999999999			22.4375
	12.2125			21.500000000000004
	11.73125			21.19375
	12.19375			21.18125
Sep.	11.1625			20.79375
	10.625			20.20625
	10.643749999999999			22.218749999999996
	11.5			21.9
	10.6375			20.237499999999997
	9.91875			20.293750000000003
	10.575000000000001			22.9125
	11.093749999999998			20.268749999999997
	10.85			20.45
	11.2125			20.15625
	11.025			20.24375
	10.9625			19.8375
	10.45			21.075
	11.868749999999999			20.518749999999997
	10.6125			19.48125
	9.0625			17.65
	8.69375			17.15
	8.1875			17.124999999999996
	8.593750000000002			17.287499999999998
	8.84375			17.8625
	8.956249999999999			18.01875
	9.518749999999999			17.90625
	9.15			17.893750000000004
	7.55			16.03125
	7.14375			14.812500000000002
	6.6187499999999995			15.968749999999998
	7.4375			16.00625
	6.456249999999999			16.0625
	7.1499999999999995			15.5
	7.9			15.924999999999999
Oct.	6.8125			15.1125
	6.7749999999999995			14.26875
	5.5874999999999995			11.95
	4.41875			12.26875
	4.9937499999999995			15.09375
	6.8			14.24375
	6.00625			13.45625
	6.05625			13.4
	5.13125			12.162500000000001
	5.15625			13.243750000000002
	4.35			11.9125
	4.562499999999999			11.05625
	4.425			10.6625
	3.3125			10.812500000000002
	2.44375			9.875000000000002
	2.4499999999999997			9.3125
	3.35625			9.90625
	3.2125			10.075
	2.1437500000000003			10.200000000000001
	1.8312499999999998			8.98125
	1.4375			8.181249999999999
	2.2437499999999995			9.54375
	3.31875			11.362499999999999
	1.94375			9.7
	0.475			7.2437499999999995
	1.4875			8.656250000000002
	0.58125			7.9
	0.11249999999999993			7.018750000000001
	0.6			8.43125
	-0.9687500000000003			5.862499999999999
	-1.1125			5.249999999999999
Nov.	-1.25625			5.53125
	-1.125			5.625000000000001
	-1.2687499999999998			5.4875
	-2.2812500000000004			4.362500000000001
	-2.0500000000000003			4.0562499999999995
	-3.1874999999999996			4.3
	-3.18125			4.29375
	-3.437499999999999			3.531249999999999
	-2.5500000000000003			3.35
	-2.2500000000000004			4.6625000000000005
	-2.0000000000000004			4.3687499999999995
	-1.2562499999999999			4.15
	-1.6875			3.5687500000000005
	-3.6499999999999995			2.175
	-3.39375			1.93125
	-3.49375			3.9374999999999996
	-2.5124999999999993			2.5125
	-2.375			3.05
	-2.88125			3.0375000000000005
	-3.8499999999999996			1.475
	-2.24375			3.1250000000000004
	-3.11875			2.0812499999999994
	-5.81875			-1.2812499999999998
	-6.26875			-0.51875
	-4.050000000000001			1.0750000000000002
	-5.4750000000000005			0.5000000000000001
	-5.11875			1.2687499999999998
	-5.374999999999999			0.3062500000000001
	-6.2			0.05624999999999997
	-5.98125			-0.5937499999999997
Dec.	-5.437499999999999			0.59375
	-6.824999999999999			-0.8937499999999997
	-7.668749999999998			-0.9874999999999998
	-6.643749999999999			-0.9624999999999999
	-7.68125			-1.16875
	-8.4625			-1.6624999999999999
	-6.737500000000001			-1.21875
	-5.8999999999999995			-0.16874999999999996
	-7.21875			-0.049999999999999864
	-7.8062499999999995			-2.2
	-7.099999999999999			-1.6125000000000003
	-7.78125			-1.6250000000000002
	-8.05625			-2.16875
	-7.318749999999998			-0.4312499999999999
	-7.468750000000001			-1.7312500000000002
	-8.28125			-2.4312499999999995
	-6.926666666666665			-1.2400000000000007

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

30°C

Highest Temp

4 Jun. 26

-24°C

Lowest Temp

8 Feb. 26

Seasonal Breakdown

Hottest MonthJune27.4°C

Coldest MonthJanuary-11.98°C

Wettest MonthMarch13.78mm

Windiest MonthMarch22.05km/h

Cornwall 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 Cornwall historically?

July is historically Cornwall's hottest month, with average maximum temperatures around 26°C. During peak heatwave events, the highest recorded temperatures have reached 36°C on 2025-08-12.

2. What is the coldest month in Cornwall historically?

January is Cornwall's coldest month, with average minimum temperatures around -11°C. The all-time record low of -31°C was recorded on 2023-02-04.

3. What is the average annual rainfall in Cornwall over the past 17 years?

Cornwall's average annual rainfall is approximately 1185.05mm, based on records spanning 17 years.

4. How many rainy days does Cornwall experience on average per year?

Cornwall historically records approximately 201.8 rainy days per year. October has the highest number of rain days at an average of 17.1 days.

5. What is the all-time highest temperature ever recorded in Cornwall?

The all-time highest temperature recorded in Cornwall is 36°C on 2025-08-12.

6. What is the all-time lowest temperature ever recorded in Cornwall?

The all-time lowest temperature recorded in Cornwall is -31°C on 2023-02-04.

7. What is the windiest time of year in Cornwall historically?

Cornwall experiences its strongest winds during April. The historic gust record of 45.8 kph was recorded on 2013-11-01.

8. What is the highest and lowest humidity in Cornwall during a year?

Usually, Cornwall's humidity peaks in February at around 88.4% and drops to its lowest in April at approximately 75.3%.

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Yearly Summary 2026

Seasonal Breakdown

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Yearly Summary 2026

Seasonal Breakdown

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Recent Blogs On Weather

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

Cornwall Historic Weather Records
Analyse hottest, coldest, windiest & wettest days