Weather in Helsinki

Calculated from weather data of Helsinki Vantaa Airport (EFHK) between 2020 and 2024.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	-2.9	-6.7	0.1	-1.3	-3.6	3.7
February	-1.1	-2.5	0.0	0.3	-5.4	2.9
March	2.6	3.5	1.3	4.5	2.2	4.7
April	8.9		10.8	7.5	8.5	8.5
May	15.3		16.1	14.3	14.6	13.5
June	21.4		22.0	21.6	24.3	22.3
July	22.2		21.0	22.5	26.0	20.0
August	21.0		20.8	23.8	19.1	20.8
September	15.3		18.3	13.5	12.8	16.6
October	9.0		7.2	10.5	10.3	10.9
November	3.9		1.3	3.6	3.6	6.4
December	-1.8		-3.0	-3.7	-5.9	2.2
Average	8.5	-2.9	9.7	10.3	9.3	11.0

2nd highest temperature of Finland

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	-7.6	-13	-4	-7	-7	0
February	-7.1	-6	-6	-6	-13	-3
March	-5.3	-3	-6	-5	-5	-3
April	-1.2		-1	-2	0	0
May	4.0		3	4	5	3
June	10.0		8	11	12	11
July	12.0		11	12	14	11
August	11.6		13	13	12	10
September	7.4		10	5	6	9
October	3.3		2	4	6	5
November	-1.7		-3	0	-1	2
December	-5.6		-7	-8	-10	-1
Average	1.0	-8.7	1.7	2.1	1.6	3.6

22nd lowest temperature of Finland

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
30 °C or warmer	0	0	2	4	0
25 °C or warmer	0	11	23	30	9
20 °C or warmer	0	63	64	72	49
0 °C or colder	69	149	139	126	95

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	41.2	47	36	46	53	30
February	32.9	37	34	39	29	32
March	21.4	19	26	10	29	22
April	12.8		2	16	15	15
May	10.0		7	15	14	10
June	6.8		3	7	3	8
July	8.4		11	8	4	14
August	11.1		21	2	15	12
September	11.9		9	11	9	13
October	23.8		25	20	23	16
November	30.6		42	38	25	22
December	38.3		51	46	26	46
Average	18.5	31.3	17.4	16.1	16.7	16.7

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (km/h)

Month	Average	2024	2023	2022	2021	2020
January	17.2	18	17	20	15	21
February	17.3	16	17	18	14	22
March	17.5	14	17	15	19	20
April	16.8		16	16	19	19
May	16.3		17	18	16	17
June	16.0		13	16	14	15
July	15.0		15	15	15	16
August	16.0		15	16	18	13
September	16.3		16	13	16	18
October	17.0		18	17	20	16
November	16.1		13	17	17	18
December	16.0		13	11	16	17
Average	16.3	15.3	15.6	16.1	16.6	17.1

1st highest wind speed of Finland

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	SW	S	W	NE	SW
February	SE	W	S	N	SW
March	SE	SW	W	SW	SW
April		NE	W	SW	W
May		SW	SW	SE	W
June		W	SW	SW	E
July		SW	SW	SW	SW
August		SE	S	S	SW
September		SW	N	N	SW
October		NW	SW	S	S
November		NE	NE	W	S
December		NE	E	NW	SE

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Helsinki weather Q&A

What is the warmest month in Helsinki?

The warmest month is July with an average temperature of 22 °C over the past years.

What is the coldest month in Helsinki?

The coldest month is January with an average daytime temperature of -1 °C in the past few years.

Which month is the wettest in Helsinki?

Chance of precipitation is the highest in January with a probability of around 41.3 %.

Which month is the driest in Helsinki?

The least rainfall and snow can be expected in June. The probability is about 6.8 %.