Weather in Mariehamns stad

Calculated from weather data of Mariehamn Airport (EFMA) between 2020 and 2024.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	1.6	-2.8	2.5	2.0	0.9	5.5
February	1.3	0.4	2.0	1.8	0.0	4.0
March	3.6	3.5	1.9	6.0	4.7	4.7
April	7.8		7.9	7.2	7.5	7.9
May	12.9		12.6	12.5	12.0	11.4
June	19.1		20.0	19.6	20.3	21.0
July	20.4		19.3	20.3	23.1	18.6
August	19.7		19.1	21.8	18.1	20.6
September	15.4		17.3	13.9	13.8	16.5
October	9.9		8.1	11.5	10.8	11.4
November	5.8		3.3	6.2	5.5	8.3
December	2.2		-1.9	-2.9	0.2	5.0
Average	9.0	0.9	9.5	10.5	9.8	11.2

1st highest temperature of Åland

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	-3.1	-7	-2	-2	-3	2
February	-5.8	-3	-4	-2	-9	-2
March	-4.6	-2	-7	-4	-2	-1
April	-2.9		-1	-2	-1	0
May	3.2		3	3	4	2
June	8.8		7	10	11	9
July	11.1		12	11	12	10
August	11.4		14	13	11	10
September	7.9		10	5	6	9
October	4.2		3	5	6	6
November	1.5		0	3	-1	4
December	-3.8		-5	-8	-6	2
Average	2.1	-4.0	2.3	3.0	2.3	4.1

1st lowest temperature of Åland

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	0	0	0
25 °C or warmer	0	3	8	8	3
20 °C or warmer	0	29	42	46	39
0 °C or colder	64	137	122	139	66

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	24.4	37	27	28	33	7
February	19.9	30	21	22	20	7
March	15.4	14	29	4	13	11
April	7.5		7	8	12	5
May	7.7		6	8	15	6
June	4.4		4	4	3	3
July	5.6		9	4	5	7
August	7.2		11	4	12	4
September	7.7		6	10	5	6
October	15.5		12	9	15	17
November	20.5		34	21	13	19
December	25.5		31	14	26	32
Average	12.5	24.7	13.2	9.1	12.0	8.3

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	15.7	18	18	18	13	18
February	16.1	17	16	18	14	20
March	16.2	14	16	15	18	20
April	15.6		15	15	17	19
May	14.4		15	15	14	15
June	13.8		12	14	13	13
July	13.5		14	15	13	15
August	15.1		16	15	15	14
September	14.5		16	13	15	15
October	15.8		16	15	20	17
November	14.3		12	14	14	18
December	14.2		12	10	15	16
Average	15.0	16.2	14.8	14.8	15.0	16.1

1st highest wind speed of Åland

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	NW	NE	SW
February	S	W	SW	NW	SW
March	SE	W	W	W	SW
April		NE	NW	NW	NW
May		SW	W	SE	NW
June		NW	S	S	SE
July		SW	SW	S	SW
August		S	S	SW	S
September		S	NE	SE	SW
October		NW	SW	SW	S
November		NE	SE	W	SW
December		N	NE	NW	S

Prevailing wind direction

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

Mariehamns stad weather Q&A

What is the warmest month in Mariehamns stad?

The warmest month is July with an average temperature of 20 °C over the past years.

What is the coldest month in Mariehamns stad?

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

Which month is the wettest in Mariehamns stad?

Chance of precipitation is the highest in December with a probability of around 25.6 %.

Which month is the driest in Mariehamns stad?

The least rainfall and snow can be expected in June. The probability is about 4.5 %.