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

Helsinki Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-3.7187500000000004	-9		0.12500000000000003	-3.2
	-4.81875	-4		-1.8749999999999998	-3.6
	-5.8500000000000005	-5.8		-1.7187499999999998	-2.6
	-5.731249999999999	-9.1		-1.7062499999999998	-7.2
	-7.3500000000000005	-15		-3.5749999999999997	-9.9
	-8.8	-13		-3.50625	-3.6
	-6.8687499999999995	-7.9		-2.90625	-2.8
	-5.7625	-12.7		-0.8125000000000001	-8.7
	-4.262500000000001	-13.4		-0.6375000000000002	-10.5
	-4.968750000000001	-10.4		-1.0250000000000001	-7.3
	-5.1312500000000005	-7.2		-0.6875000000000001	-5.9
	-5.56875	-12.1		-1.3312500000000003	-7.5
	-5.45625	-11.7		-1.3312499999999998	-7.8
	-5.1499999999999995	-10.7		-2.14375	-6
Jan.	-6.91875	-6.6		-3.1999999999999997	-4.7
	-7.262499999999998	-4.8		-3.3624999999999994	-1.3
	-7.18125	-4.5		-1.98125	-0.1
	-5.718750000000002	-1		-2.3750000000000004	0.5
	-5.9875	-1.7		-1.4500000000000002	1.5
	-7.175000000000001	-4.2		-2.99375	1.1
	-8.06875	-6.6		-3.8812500000000005	0.5
	-7.15625	-10.8		-3.1625000000000005	-4.6
	-6.281250000000001	-11		-1.6437500000000003	-8
	-5.043749999999999	-10.6		-1.3125	-6.7
	-4.475	-11.2		-0.64375	-7.2
	-5.2875	-12.9		-1.61875	-6.9
	-5.443749999999999	-14.8		-2.0687499999999996	-7.9
	-4.5562499999999995	-14		-0.9625000000000001	-8.9
	-3.3062499999999995	-16.4		-0.7375000000000003	-9.3
	-3.95625	-17.2		-0.6187500000000004	-9.4
	-3.725	-18.4		-1.1875	-12.6
	-4.85	-18.6		-1.5937499999999996	-12.3
	-4.625	-19.6		-1.79375	-10
	-5.7875000000000005	-16.2		-1.8749999999999996	-8.8
	-6.593749999999999	-15.7		-2.9562500000000003	-8.4
	-6.7250000000000005	-15.5		-1.8499999999999999	-9.5
	-6.362500000000002	-16.5		-1.84375	-10.7
	-6.0249999999999995	-17.1		-1.3062500000000001	-8.1
	-5.5	-16.4		-2.24375	-8.5
	-5.937499999999999	-13.2		-2.4250000000000007	-3.6
	-5.66875	-9.2		-2.40625	-5.5
	-5.762500000000001	-13.1		-2.25625	-3.5
	-5.475	-14.3		-1.69375	-7.2
	-4.725	-16.3		-1.1999999999999997	-10.6
	-4.89375	-18.4		-1.5124999999999997	-10
Feb.	-5.4750000000000005	-19.1		-2.0062500000000005	-6.5
	-5.393749999999999	-16.7		-1.8187500000000003	-6.7
	-5.125000000000001	-16.9		-1.7624999999999997	-8.6
	-6.35625	-15.1		-2.2125	-9.6
	-5.949999999999999	-13		-2.3562499999999997	-8.5
	-7.106249999999999	-13.1		-2.5000000000000004	-5.8
	-6.39375	-6.3		-2.64375	-1.6
	-7.006250000000001	-12.8		-2.1374999999999997	-2.7
	-5.65625	-14.8		-1.0812499999999998	-5.9
	-4.74375	-11.7		-1.6500000000000001	-5.2
	-4.593749999999999	-14.7		-0.25	-4
	-4.45	-3.3		-0.46875	0.8
	-5.04375	0.8		-0.6875000000000002	1.3
	-3.5500000000000007	-1.2		0.2312499999999999	1.9
	-4.31875	-0.1		0.3375	0.9
	-3.5625	-4.4		0.4625	1.1
	-3.2875	-0.4		-0.08125000000000013	1.5
	-4.6	0.1		-0.43124999999999997	2.7
	-5.48125	-2.5		-0.55625	2.8
	-5.150000000000001	-3.1		-0.06249999999999989	2.4
	-5.262499999999999	-1.3		-0.5000000000000002	3.4
	-3.9937499999999995	-2.2		0.68125	4.1
	-4.1312500000000005	-1.4		0.05625000000000002	3.8
	-3.8812500000000005	-2.2		0.48125	3.4
	-3.15625	-0.5		0.9125000000000001	2.2
	-3.825	1.6		0.83125	2.8
	-3.5124999999999997	1		1.3125	4.9
	-3.9124999999999996	3.4		1.2625	5.5
Mar.	-3.9937500000000004	1.5		0.60625	5.1
	-4.5625	1.3		0.7749999999999999	2.4
	-4.506249999999999	0.5		0.6937499999999999	4.4
	-3.6875000000000004	0		1.4187500000000002	4
	-2.906249999999999	1		1.08125	6
	-3.5937500000000004	-0.2		1.6625	6.4
	-3.0999999999999996	0.7		1.65625	5.4
	-2.95625	0.9		1.475	4.7
	-2.24375	1.3		2.25	5
	-2.09375	-0.7		2.43125	4.1
	-2.0999999999999996	2.5		2.4062500000000004	6.8
	-2.5625	1.7		2.225	4.4
	-2.79375	0.3		2.5937500000000004	6.4
	-1.4750000000000003	0.2		3.06875	4.9
	-1.5375	-0.1		3.2	4.8
	-2.0874999999999995	0.5		2.9125000000000005	5.5
	-1.7937500000000002	2.4		2.825	5.7
	-2.1312499999999996	0.1		3.29375	5.6
	-0.8187500000000002	1.4		3.88125	5.6
	-0.6624999999999999	3.3		4.1625000000000005	4.9
	-1.16875	2.3		3.60625	3.5
	-1.10625	1.7		3.15	3.7
	-0.7124999999999999	1		3.55	2.7
	-0.11875	1.2		4.325	5.1
	-0.06249999999999997	0.1		4.543749999999999	5
	0.012500000000000094	-1.6		4.824999999999999	4.1
	-0.43125	-0.6		4.793750000000001	5.2
	0.3124999999999999	-0.1		5.156249999999999	6.3
	0.5375000000000001	0.6		6.387499999999999	6.3
	0.9125	1.9		6.2250000000000005	8.1
	1.01875	2.8		5.83125	8.6
Apr.	0.28125	3.8		6.249999999999999	9.7
	0.9562499999999999	4.3		6.987500000000002	7.5
	1.25	6.5		7.300000000000002	11.6
	1.6562500000000002	3.1		7.6125	8
	1.6375000000000002	0.7		7.987499999999999	6
	1.44375	0.8		8.1	9.4
	2.1125000000000003	3.1		8.424999999999997	12.1
	2.20625	5		8.0375	11.9
	2.2062500000000003	0		7.631250000000001	8.2
	1.95	2.3		7.91875	10.2
	2.36875	0.6		8.556249999999999	8
	2.53125	0.4		7.831250000000001	7.4
	2.6687499999999997	0.1		8.15625	7.7
	2.15625	0.6		8.45625	6.4
	2.375	-0.3		8.06875	8.1
	2.3625	2		8.48125	11.7
	2.7437500000000004	5.8		8.662499999999998	15
	2.5625	5.1		8.331249999999999	14.4
	2.675	5.8		9.025	12
	2.75625	5.9		8.25625	9.6
	2.925	4.3		9.543750000000001	10.1
	3.4562500000000003	0.9		10.299999999999999	9.7
	3.85	2.7		9.5	10.1
	3.7562499999999996	3		10.062499999999998	11.7
	3.9187500000000006	4.4		10.53125	9.6
	4.875000000000001	4		11.4125	10.1
	6.356249999999999	5.3		12.618749999999999	11.3
	5.900000000000001	8.1		12.862499999999999	13.2
	5.66875	7.4		12.618749999999999	13.4
	6.262500000000001	6.2		13.131250000000001	10.6
May	6.362500000000001	6.5		12.8375	11.9
	6.59375	6.9		13.987499999999999	15.1
	7.156250000000001	6.6		13.524999999999999	11.5
	7.5875	5.2		14.525	15.9
	8.206249999999999	10		14.856249999999998	15.4
	8.456249999999999	8		15.55625	15.5
	8.343750000000002	10.3		15.381249999999998	15.9
	8.543750000000001	8.4		15.599999999999998	15
	8.668750000000001	8.8		15.262500000000001	18.5
	8.26875	9.8		14.874999999999998	16.7
	8.8875	10.5		15.237499999999999	15.4
	8.7375	7.8		15.36875	15.9
	8.65625	7.3		14.38125	12.9
	8.55625	7.7		14.656250000000002	14.7
	8.687500000000002	7.2		15.25	16.2
	8.725	8.1		15.031249999999998	18.7
	9.356250000000001	9.7		15.6	12.7
	9.26875	8.5		16.637499999999996	14.3
	9.774999999999999	8.7		15.81875	16
	9.89375	9.6		16.875	18.6
	10.39375	11.1		17.09375	19.4
	10.424999999999999	12.3		16.956249999999997	17.6
	10.006250000000001	10.8		16.943750000000005	14.4
	10.693750000000001	10.4		17.25625	17.4
	10.50625	10.2		16.606249999999996	18.3
	10.03125	13.4		16.562499999999996	15.2
	10.35625	10.9		17.043750000000003	15.8
	10.76875	10.2		17.35	16
	10.812499999999998	10.8		16.30625	16.2
	10.4125	9.1		17.09375	14.8
	10.63125	9.6		16.7125	14.7
Jun.	10.793750000000003	10.6		17.768749999999997	14.9
	10.793750000000001	10.1		18.15625	17.4
	11.406250000000002	12		18.03125	14.9
	12.006249999999998	11.5		17.381249999999998	19.1
	12.25625	12.6		18.131249999999998	19.6
	11.987500000000002	12.2		18.05625	20.2
	11.71875	15.2		18.05	21.9
	12.018750000000004	12.9		17.8625	20.2
	11.35	9.4		18.231249999999996	18.9
	12.125	10.7		18.5625	17.7
	12.799999999999999	9.8		18.206249999999997	19.2
	12.86875	10.9		19.4375	21.4
	13.281250000000002	13.2		19.6625	22.8
	13.137500000000001	14.9		20.275	21.1
	13.43125	15.8		19.7375	22.7
	13.762500000000001	15.6		19.987499999999997	24
	13.75	14.5		19.843750000000004	20.2
	13.899999999999999	14.5		19.943749999999998	17.5
	13.781249999999998	13.2		20.225	16.8
	13.274999999999999	12.7		19.3	18.7
	13.493749999999999	13.4		19.3625	16
	13.524999999999999	11.7		19.056250000000002	14.6
	13.95	10.1		20.0375	15.4
	14.55625	10.9		19.7375	17.5
	13.812499999999998	12.8		19.681250000000002	17.6
	13.35625	12.9		19.437499999999996	19.4
	13.681249999999999	14.9		19.8125	25.2
	14.318750000000003	17		20.53125	26.4
	14.575000000000003	16.5		21.175	23.4
	14.38125	16.9		21.275	22
Jul.	14.462499999999999	15		21.0375	24.5
	14.69375	15.5		20.76875	20
	14.624999999999996	14.7		21	22.6
	14.812500000000002	17		20.88125	21.3
	14.38125	15.5		20.375	20.1
	14.118749999999999	13		21.168750000000003	19.3
	14.593750000000002	10.5		21.868750000000002	15.7
	15.2	10.6		21.73125	16.9
	15.006250000000003	11.9		21.625	17.9
	14.925	12.2		20.825	18.5
	15.581250000000004	13.5		22.287499999999994	18.8
	16.643749999999997	15.8		23.3625	18.1
	16.5875	15.7		23.175	18.7
	16.40625	13.9		23.075	19.2
	16.250000000000004	11.9		21.737499999999997	21.5
	15.912500000000001	13.1		21.24375	21.9
	15.393749999999999	16.4		21.4125	23.2
	14.95625	14.9		20.225	20.9
	14.893749999999999	14.4		20.79375	20
	14.931249999999997	13.7		20.981249999999996	19.6
	15.312499999999998	13.5		21.062500000000004	20.1
	15.281249999999996	12.4		20.7875	20
	15.237499999999999	16.4		20.83125	22.4
	15.681249999999999	14.6		21.287499999999998	20.8
	15.387500000000001	12		21.35625	20.2
	15.268749999999999	13.3		21.1625	19.8
	15.206249999999999	15.2		20.80625	21.6
	15.06875		12.4	20.187500000000004		18.9
	14.0125		10.7	20.08125		18.6
	13.581249999999999		8.9	19.8625		18.7
	14.11875		14.4	19.762500000000003		20.4
Aug.	14.8125		16	20.537500000000005		22.2
	14.631250000000001		13.6	20.462500000000002		18.8
	15.168750000000001		11.3	20.606249999999996		18
	15.024999999999999		11.3	20.11875		15.6
	14.55		14.7	19.8875		19.8
	14.18125		13.5	19.3625		19.1
	13.40625		13.6	18.987500000000004		19.3
	13.46875		13.6	19.218750000000004		18.8
	13.61875		13.4	18.79375		18.8
	13.337499999999999		13.1	18.8		19
	13.05		12.9	18.40625		18.6
	13.15		13.1	18.900000000000002		18.7
	13.1625		13.1	18.525000000000002		18.6
	13.087499999999999		12.9	18.981250000000003		18.8
	12.931249999999999		13.1	18.025		18.1
	12.831249999999999		13	17.70625		17.9
	12.687499999999998		12.6	17.78125		17.3
	12.23125		12.4	17.250000000000004		17.3
	11.468750000000002		11.9	16.581249999999997		16.8
	11.656249999999998		11.9	16.4125		16.8
	11.525		11.8	16.987500000000004		17
	11.924999999999999		11.9	17.45		17.6
	11.906249999999998		11.7	17.7		17.2
	11.65625		11.8	16.86875		17
	12.175		12.1	17.55625		17.4
	12.35		12.4	17.425		17.7
	12.275		12.5	17.63125		17.7
	12.9			17.424999999999997
	13.00625			17.11875
	12.325			16.6
	11.875			15.675
Sep.	10.975000000000001			15.43125
	10.7125			15.087500000000004
	10.03125			15.012500000000001
	9.974999999999998			14.631249999999998
	10.087499999999999			14.862500000000002
	10.45625			14.637500000000003
	10.537500000000001			14.962499999999999
	9.13125			14.38125
	8.25625			12.687499999999998
	8.10625			12.45
	8.7375			13.125
	9.4125			13.525
	9.431250000000002			13.74375
	9.70625			13.325000000000001
	8.4875			12.4125
	8.424999999999999			12.4
	7.800000000000001			12.0125
	7.618750000000001			11.675
	7.8812500000000005			11.575000000000001
	7.875			11.249999999999998
	6.7625			10.75
	7.45			11.28125
	7.18125			11.1125
	6.862499999999999			10.2875
	7.331249999999999			10.481250000000003
	7.35			10.7
	7.1937500000000005			10.587499999999999
	6.06875			10.04375
	5.4			9.5375
	5.4			9.106250000000001
Oct.	5.056250000000001			9.01875
	5.5			8.812499999999998
	4.8062499999999995			8.631250000000001
	4.44375			8.493749999999999
	4.56875			8.325
	4.675			8.206249999999999
	3.9625000000000004			7.725000000000001
	3.7312500000000006			7.81875
	4.3812500000000005			7.5562499999999995
	3.993750000000001			7.575000000000002
	4.5			7.862500000000001
	4.30625			7.456250000000001
	3.98125			6.9
	4.2375			7.2375
	4.28125			7.437500000000001
	3.39375			6.618750000000001
	3.8625000000000003			7.4624999999999995
	4.38125			7.39375
	4.4125000000000005			7.68125
	4.55			7.493750000000001
	5.175000000000001			7.668749999999999
	3.9875			6.49375
	3.4312500000000004			6.325
	3.775000000000001			6.2437499999999995
	3.5937499999999996			6.075
	2.5562500000000004			6.125000000000001
	3.631249999999999			6.6000000000000005
	3.44375			5.96875
	3.15625			6.29375
	2.525			5.987500000000001
	2.1687499999999997			5.01875
Nov.	1.98125			5.04375
	2.2937499999999997			4.918750000000001
	2.3			4.9750000000000005
	2.0250000000000004			4.793750000000001
	1.5499999999999998			4.275
	1.225			3.9687499999999996
	0.1			3.1375
	-0.5312500000000001			2.9875000000000003
	0.19374999999999998			3.14375
	-0.05624999999999988			3.475
	-0.70625			2.78125
	-1.1			2.7124999999999995
	0.49999999999999994			2.8875
	-0.7562499999999996			2.24375
	-0.85			1.69375
	-1.9437499999999999			1.1937499999999999
	-1.8125			1.3875000000000002
	-2.075			0.8812500000000001
	-1.7187500000000002			1.0875
	-2.39375			0.9624999999999999
	-3.05			1.25
	-1.3			2.2062500000000003
	-1.625			1.4062500000000002
	-1.3875			1.4687500000000002
	-1.1812500000000001			1.61875
	-1.9999999999999996			1.6687499999999997
	-1.9687500000000004			1.1062500000000002
	-2.3750000000000004			0.6874999999999997
	-2.4875000000000003			0.43125
	-2.8874999999999997			0.6125
Dec.	-2.34375			0.5499999999999999
	-2.15625			1.93125
	-1.3562499999999997			2.0500000000000003
	-1.1062500000000002			2.3124999999999996
	-0.9687499999999997			1.7249999999999999
	-1.2625000000000002			1.7062499999999998
	-1.45625			1.36875
	-2.4125			0.28125
	-3.1812500000000004			0.6062499999999997
	-3.3999999999999995			0.06250000000000006
	-3.33125			0.825
	-2.89375			0.8437499999999998
	-3.6312500000000005			0.48749999999999993
	-3.4875			0.15625000000000003
	-2.8124999999999996			0.6499999999999999
	-2.4625			1.53125
	-1.7733333333333334			1.4866666666666668

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

26°C

Highest Temp

12 Jul. 26

-20°C

Lowest Temp

2 Feb. 26

Seasonal Breakdown

Hottest MonthAugust20.54°C

Coldest MonthFebruary-13.5°C

Wettest MonthJuly4.48mm

Windiest MonthAugust25.82km/h

Helsinki 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 Helsinki historically?

July is historically Helsinki's hottest month, with average maximum temperatures around 21°C. During peak heatwave events, the highest recorded temperatures have reached 31°C on 2010-07-28.

2. What is the coldest month in Helsinki historically?

February is Helsinki's coldest month, with average minimum temperatures around -6°C. The all-time record low of -23°C was recorded on 2024-01-07.

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

Helsinki's average annual rainfall is approximately 744.4mm, based on records spanning 17 years.

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

Helsinki historically records approximately 211.9 rainy days per year. July has the highest number of rain days at an average of 20.9 days.

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

The all-time highest temperature recorded in Helsinki is 31°C on 2010-07-28.

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

The all-time lowest temperature recorded in Helsinki is -23°C on 2024-01-07.

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

Helsinki experiences its strongest winds during December. The historic gust record of 49.7 kph was recorded on 2023-09-20.

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

Usually, Helsinki's humidity peaks in February at around 90.4% and drops to its lowest in May at approximately 71.1%.

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