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.
	-3.14375	-7		3.19375	-3.8
	-4.924999999999999	-9.6		2.2687500000000003	-3.5
	-6.037500000000003	-8.7		0.04375000000000023	-1.6
	-5.425000000000002	-6.5		1.44375	-1.2
	-6.18125	-9.9		0.5374999999999999	-4.4
	-6.0375000000000005	-3.4		-0.10625000000000014	2.1
	-7.931250000000001	-0.3		-1.2875	5
	-7.900000000000002	-1.1		-1.2125	2.4
	-7.056249999999999	-3.4		-0.5312500000000002	4.3
	-5.85625	0.8		1.7437500000000004	6.7
	-4.725	-1.7		2.05625	3.5
	-3.13125	-3.7		4.5	1.5
	-5.0875	-1.1		3.8312500000000003	5
	-6.587500000000001	1.2		0.12499999999999983	4
Jan.	-6.5875	-7.8		-0.11250000000000002	2.1
	-6.2749999999999995	-8.1		1.05625	-1.5
	-6.125	-2.7		0.22499999999999995	-0.3
	-5.8999999999999995	-5.7		0.7937500000000002	-0.1
	-5.443750000000001	-7.1		1.1625	-2.7
	-7.21875	-12		0.050000000000000155	-5.3
	-8.93125	-11		-2.6937499999999996	-1.3
	-9.4125	-2		-1.5875000000000001	2.2
	-7.924999999999999	-8.4		-0.13749999999999987	-1.8
	-7.49375	-17.4		-0.31874999999999987	-12
	-5.849999999999999	-13.2		1	-11.5
	-6.006249999999999	-9.7		0.34375	-5.7
	-5.35625	-12.4		1.8875000000000002	-7.2
	-6.131249999999999	-12.9		-0.08124999999999999	-4.9
	-7.1125	-13.5		-0.5687500000000001	-5.2
	-8.79375	-16.7		-0.51875	-9.1
	-8.493749999999999	-15.8		-0.48125000000000007	-7
	-6.625	-12.3		1.5562499999999995	-7.1
	-6.5687500000000005	-14		1.1312499999999999	-1.2
	-6.48125	-13.4		1.025	-1.3
	-6.837499999999999	-10.1		2.175	-3.4
	-7	-10.7		1.7625	-1.8
	-7.3500000000000005	-12.7		0.75625	-3.3
	-6.19375	-18.3		2.05	-4.1
	-6.374999999999998	-21.6		1.2249999999999999	-11.1
	-7.66875	-16.8		-0.056250000000000064	-2.9
	-5.437500000000001	-12		1.46875	0
	-6.5562499999999995	-4.8		1.11875	0
	-7.562499999999998	-7.7		0.9875000000000002	-1.4
	-7.987499999999999	-10.3		-0.2625	1.7
	-8.20625	-6.7		0.18749999999999994	2.7
Feb.	-7.268749999999998	-5.8		1.6999999999999997	3.5
	-5.04375	-4.3		2.81875	6.2
	-6.012499999999999	-0.6		1.8	5.4
	-7.3812500000000005	0		1.8687500000000004	2.4
	-6.74375	-1.6		1.8375	3.7
	-6.099999999999999	-0.8		1.9000000000000001	0.8
	-5.25	-0.7		3.29375	2.2
	-4.075	-1.7		4.3374999999999995	0.6
	-3.11875	-5.4		4.63125	-1.9
	-3.91875	-9.6		4.59375	-3.5
	-4.13125	-12		3.7	2.6
	-5.5125	-7.7		2.0625	1.8
	-5.068749999999999	-8		3.4687500000000004	6.1
	-4.55625	-2.8		3.4	7.5
	-4.1875	-6.4		4.324999999999999	-0.6
	-4.8125	-12.3		3.5625	-0.8
	-6.38125	-8.1		2.3499999999999996	1.1
	-4.66875	-1.6		2.9624999999999995	10.1
	-4.8187500000000005	-5.3		3.5999999999999996	2.4
	-4.8875	0.8		3.58125	2.3
	-4.293750000000001	0.1		4.2	3.9
	-3.3625	4.5		5.537500000000001	12
	-2.26875	-0.5		7.293749999999999	14.9
	-1.93125	1.8		8.1625	17.7
	-0.1750000000000001	5.5		8.4125	8.7
	-2.1187500000000004	-3		7.05	12.3
	-2.9875000000000003	-3.3		5.5625	2.8
	-1.0750000000000002	-0.3		7.375000000000001	3.8
Mar.	-0.5125000000000001	-2.7		7.03125	3.8
	-1.3062499999999995	2.5		6.85	13.3
	-1.6499999999999997	-3		7.875	13.6
	-0.9062500000000001	-5.9		8.518749999999997	0.4
	-1.51875	-3.1		7.068749999999999	4.1
	-1.1187500000000001	-1.9		8.25	8.8
	0.08125	0		8.74375	7.1
	-1.2937499999999997	3.9		7.762499999999999	10.4
	-2.08125	0.2		6.51875	5
	-0.6937499999999999	-4		7.4312499999999995	7
	-0.4749999999999999	0.1		8.08125	8.7
	-0.8999999999999998	3.2		7.8500000000000005	15.7
	-2.4562500000000003	2		7.55	12.8
	-0.725	-3.8		7.656250000000001	0.3
	0.8062500000000001	-4.2		8.893749999999999	8.5
	0.41875000000000007	4		8.668750000000001	15.2
	0.8187500000000001	8.9		9.93125	19
	0.7125000000000001	9.2		10.231249999999998	19.4
	-0.10625000000000004	1.8		9.543749999999998	4.5
	1.3687500000000001	2		10.725	19.4
	1.43125	5.4		10.406249999999998	22.7
	1.34375	3.8		9.71875	13.7
	1.1812500000000001	0.5		10.537499999999998	8.3
	1.71875	-2.2		10.925	6.4
	2.73125	-2.9		11.537499999999998	12.7
	1.5687500000000003	-0.4		11.787500000000001	14.4
	2.44375	2.8		12.7375	22.1
	3.4312500000000004	4.7		13.868749999999999	12.8
	4.493750000000001	1		13.243750000000002	16.4
	5.5125	5.8		15.043750000000001	26.5
	6.2250000000000005	14.2		17.200000000000003	28.8
Apr.	3.9375	15.2		14.475	29
	4.00625	18.2		13.08125	28.7
	4.081250000000001	15.1		13.037500000000001	21.5
	2.7500000000000004	10.5		13.625	20.5
	4.55	1.9		13.443750000000001	8.7
	4.1187499999999995	0.6		14.8875	5.1
	3.8749999999999996	-0.5		14.381249999999998	12
	4.3625	2.4		14.862499999999999	8.2
	3.7687500000000007	4.1		14.168750000000001	20.3
	4.13125	7.9		15.1	16.5
	5.01875	2.6		13.41875	12.4
	4.84375	3.4		14.456249999999999	15.8
	4.2749999999999995	5.4		12.825000000000001	21.3
	4.5874999999999995	7.3		15.1	21
	5.174999999999999	6.7		15.65	19.3
	5.5875	6.1		14.6375	11.7
	5.525	3.5		16.9125	16.6
	7.887499999999999	5.1		18.325000000000003	11.7
	8.21875	1.3		17.893749999999997	11.6
	8.41875	5.9		17.674999999999997	20.8
	7.425000000000001	12.8		16.5125	27.1
	7.45625	10.3		15.8125	21.3
	7.037499999999999	6.6		17.375	13.2
	7.60625	3.9		17.525	14.8
	6.8812500000000005	5.6		15.875000000000002	16.6
	7.575	9.8		17.86875	20.3
	7.418749999999999	6		17.65	16.5
	6.8	3.1		17.900000000000002	17.9
	6.78125	7.8		16.525	21.1
	7.19375	9.4		17.91875	16
May	9.0625	7.5		19.787499999999998	16.7
	10.718750000000002	9.3		20.093750000000004	26.8
	10.318749999999998	15.8		19.925	30.4
	9.306250000000002	17.1		19.2625	31.9
	9.293750000000001	17.2		18.95	34.5
	9.706249999999999	12.3		20.76875	29
	10.075	6.6		22	22.9
	10.85625	6.9		20.11875	21.6
	10.862499999999999	8.5		20.61875	15.8
	10.28125	8.4		21.19375	11.5
	10.143750000000002	11.7		20.83125	22.2
	11.825	11.5		24.224999999999998	27.1
	12.98125	17.2		24.037499999999998	28.8
	12.3375	12.1		21.8625	19.9
	13.1125	10		23.15625	22.9
	13.256250000000001	6.8		23.6875	12.3
	12.8375	4.9		24.318749999999998	23
	12.131250000000001	10.2		22.54375	19.7
	12.3875	7.4		22.94375	24.5
	11.3125	11.5		22.09375	27.2
	11.4625	14.8		22.049999999999997	28.8
	12.06875	15.5		22.918750000000003	30
	12.656249999999998	18.4		22.556250000000002	31
	12.850000000000001	15.1		22.70625	23.7
	12.8875	13.2		23.868750000000002	23.5
	12.706249999999999	13.2		22.70625	27.4
	12.799999999999999	18.2		22.812499999999996	30.2
	13.10625	20.6		23.13125	33.1
	13.325	20.2		22.787499999999998	32.1
	14.36875	17.6		22.200000000000003	28.9
	12.5625	17.9		22.562499999999996	31.3
Jun.	12.187499999999998	14		23.09375	21.7
	12.843750000000002	10.6		23.1375	25.1
	13.9625	13.4		24.1125	25.6
	14.049999999999999	16.7		24.4625	30.3
	14.687499999999998	15.8		26.04375	25.3
	14.3875	14.8		25.743750000000002	26.2
	15.837499999999999	12.9		26.900000000000002	27.5
	15.799999999999999	14.7		26.137499999999996	25.3
	16.275000000000002	17.6		26.700000000000003	25.7
	16.675	13.7		27.543749999999996	26.7
	16.525	15.2		27.037499999999998	28.4
	15.668750000000001	16.7		26.50625	27.7
	15.512500000000001	17.6		24.843750000000004	28.3
	16.1	16		25.76875	28.1
	16.24375	16.6		26.675	31.7
	16.662499999999998	19.5		27.543749999999996	32.5
	17.349999999999998	21.6		27.331249999999997	35.9
	17.55625	24		26.862499999999994	37.9
	17.04375	24.2		27.231250000000003	37.3
	16.9	22.6		27.037499999999998	33.9
	16.9375	19.8		28.79375	30.3
	18.44375	16.6		29.33125	20.1
	18.424999999999997	15.4		28.856250000000003	20.4
	18.931250000000002	14.4		28.062500000000004	28.8
	18.218750000000004	19.9		27.668750000000003	31
	17.687500000000004	21.1		27.175	29.4
	17.74375	18.9		27.58125	30.2
	18.224999999999998	16.2		28.181250000000006	29.5
	17.59375	17.9		27.637500000000003	28.6
	18.356250000000003	20.7		26.937500000000004	32.8
Jul.	18.55625	21.9		28.187500000000004	30.2
	18.63125	18.2		28.80625	31.1
	18.68125	15.9		29.112499999999994	28.3
	18.662499999999998	17.5		27.768749999999994	29.3
	18.5125	17.2		29.4875	26.2
	19.0375	12.7		29.35	28
	18.0875	17.4		28.3	26
	17.61875	18.2		28.075000000000006	27
	17.793750000000003	13.8		27.525	26.7
	18.212500000000002	13.9		27.150000000000006	29.2
	17.40625	15.4		25.7625	28.9
	17.05625	15		27.468750000000007	28.2
	17.256249999999998	17.4		28.01875	29.6
	18.10625	18.9		28.85625	25.6
	18.08125	17.8		27.79375	20.3
	17.31875	17.8		27.15625	23.2
	16.262500000000003	16.2		27.256249999999998	27.8
	17.0625	18.3		25.525000000000002	29.6
	16.89375	21.4		26.90625	28.9
	16.66875	19		27.043750000000003	25.6
	17.88125	16.5		27.731250000000003	28
	17.412499999999998	17.9		27.21875	28.3
	17.1625	22.3		27.3	30.5
	17.418750000000003	21.4		26.25	31.2
	17.181249999999995	20.6		26.400000000000002	27.9
	17.193749999999998	20.4		27.04375	29.6
	17.3375	16		27.349999999999998	28.4
	17.4		16.1	26.981249999999992		29.8
	17.46875		13.9	27.306250000000002		27.8
	17.693749999999998		15.6	26.06875		26.3
	16.69375		10.3	26.0375		23.8
Aug.	16.575000000000003		7.4	25.5875		23.4
	16.687499999999996		11.3	26.537499999999998		25.6
	17.09375		13.4	26.631249999999998		24.6
	16.8875		10.9	26.43125		26.2
	16.4125		15.5	26.14375		26
	16.19375		15.2	26.224999999999994		25.6
	16.025		15.9	26.31875		25.8
	16.6875		15.9	24.993749999999995		24.7
	15.306250000000002		14.9	24.487499999999997		24.3
	15.206249999999999		15.2	25.275000000000002		25.2
	16.212500000000002		15.7	26.75625		26
	16.1125		15	26.76875		25.7
	15.94375		15.1	25.7625		25.3
	15.306249999999999		14.9	25.749999999999996		24.6
	16.025		14.7	26.100000000000005		24.1
	15.950000000000001		14.3	26.099999999999998		25.5
	15.675		14.7	25.7625		24.9
	14.987499999999999		14.4	24.606249999999992		24
	15.5		13.8	25.49375		24.3
	15.406250000000004		14.2	25.225		24.5
	15.687500000000002		14.8	25.393750000000004		25.2
	15.893750000000002		15.1	24.8		24.3
	14.943750000000001		14.3	23.781250000000004		23.4
	14.381249999999998		13.4	23.587500000000002		22.9
	14.293750000000001		13	24.125		23.7
	13.65		12.9	22.9875		22.5
	13.899999999999997		13.2	22.6125		21.6
	14.462499999999997			24.312499999999996
	14.1125			23.275000000000002
	13.543750000000001			22.71875
	12.8			22.68125
Sep.	12.799999999999999			23.21875
	11.999999999999998			21.868750000000002
	11.4			21.5625
	11.85625			22.29375
	12.424999999999999			21.95
	11.73125			20.9
	12.1			21.693749999999998
	12.01875			21.618750000000002
	12.425			21.306250000000002
	12.024999999999999			21.59375
	11.73125			21.375
	12.231250000000001			21.68125
	11.643749999999999			21.700000000000003
	12.7			21.575000000000003
	12.49375			19.88125
	11.156250000000002			18.812500000000004
	10.24375			18.643749999999997
	9.956249999999999			18.36875
	9.51875			17.381249999999998
	10.28125			18.431249999999995
	10.60625			18.675
	10.11875			19.568749999999998
	10.76875			20.88125
	10.237500000000002			18.318750000000005
	9.043750000000003			16.81875
	8.48125			16.8625
	9.1			17.63125
	7.90625			17
	7.737500000000001			16.09375
	8.13125			16.299999999999997
Oct.	8.34375			16.43125
	7.218750000000001			15.531250000000002
	6.03125			14.618749999999999
	5.5562499999999995			14.168750000000001
	5.918750000000001			15.09375
	7.58125			16.4125
	7.581249999999998			17.0375
	8.100000000000001			15.774999999999999
	7.04375			14.456249999999999
	7.0375			14.1
	7.075000000000001			14.587499999999999
	6.3187500000000005			13.118749999999999
	5.875			13.218749999999996
	5.3875			13.749999999999998
	5.33125			11.637500000000001
	4.643750000000001			11.937499999999998
	4.675000000000001			12.531250000000002
	4.4624999999999995			12.275
	4.29375			12.475
	2.9000000000000004			11.96875
	3.0875			11.012500000000001
	3.6999999999999997			11.512499999999998
	4.7625			12.3
	4.06875			12.643750000000002
	2.50625			9.675000000000002
	2.30625			11.106250000000001
	2.1062500000000006			11.01875
	2.1999999999999997			10.081249999999999
	2.6125			11.406250000000002
	1.0937500000000004			8.58125
	-0.16250000000000003			7.21875
Nov.	0.5312500000000001			7.799999999999999
	1.6249999999999998			8.331249999999999
	1.05625			8.456249999999999
	0.35625			7.725
	0.14374999999999993			7.0874999999999995
	-0.3625			7.1000000000000005
	-0.8250000000000001			6.637499999999999
	-0.18125000000000002			6.325
	-0.69375			5.79375
	-1.06875			6.431250000000002
	0.5812499999999999			7.562499999999999
	0.13124999999999995			7.55
	0.89375			7.512500000000001
	-0.8875000000000001			5.35625
	-1.2249999999999999			5.074999999999999
	-1.4437499999999999			6.06875
	-0.4375			6.50625
	-0.26875			5.7875
	-0.5625			5.7250000000000005
	-1.86875			4.762499999999999
	-1.06875			5.5
	-0.47500000000000003			6.5375
	-2.4625			2.89375
	-3.975			1.88125
	-2.2125000000000004			3.3937500000000003
	-2.1812500000000004			3.756249999999999
	-2.4687499999999996			3.874999999999999
	-2.8375			4.356249999999999
	-3.26875			3.35625
	-2.8812499999999996			3.1874999999999996
Dec.	-2.9			3.625
	-2.625			2.5062499999999996
	-3.75			2.6999999999999997
	-3.30625			2.6374999999999997
	-4.5			2.2375
	-4.5062500000000005			1.4374999999999998
	-2.9937500000000004			3.287499999999999
	-1.56875			5.15
	-2.8562499999999997			4.29375
	-3.1374999999999997			2.4
	-3.3499999999999996			2.8374999999999995
	-3.56875			2.7874999999999996
	-4.05625			2.90625
	-3.662499999999999			4.3687499999999995
	-3.04375			2.1312499999999996
	-3.5624999999999996			2.16875
	-2.8400000000000003			2.6333333333333333

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

38°C

Highest Temp

2 Jul. 26

-22°C

Lowest Temp

8 Feb. 26

Seasonal Breakdown

Hottest MonthAugust28.8°C

Coldest MonthFebruary-8.3°C

Wettest MonthMarch10.72mm

Windiest MonthMarch20.01km/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 28°C. During peak heatwave events, the highest recorded temperatures have reached 38°C on 2026-07-02.

2. What is the coldest month in Cornwall historically?

January is Cornwall's coldest month, with average minimum temperatures around -6°C. The all-time record low of -25°C was recorded on 2016-02-14.

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

Cornwall's average annual rainfall is approximately 1425.9mm, based on records spanning 17 years.

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

Cornwall historically records approximately 178.8 rainy days per year. July has the highest number of rain days at an average of 16.7 days.

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

The all-time highest temperature recorded in Cornwall is 38°C on 2026-07-02.

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

The all-time lowest temperature recorded in Cornwall is -25°C on 2016-02-14.

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

Cornwall experiences its strongest winds during March. The historic gust record of 49 kph was recorded on 2012-10-29.

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

Usually, Cornwall's humidity peaks in February at around 79.9% and drops to its lowest in April at approximately 72.7%.

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