Climate averages 1991–2020
Helsinki weather
in March.
A cold month with light precipitation: the 9th warmest and one of the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cold month in Helsinki: daytime highs average 0.7°C and nights cool to about -4.6°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 37 mm of precipitation on roughly 9 days, which makes March a month with light precipitation (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 11 h 45 min on an average March day.
The nearest other city in this atlas is Vantaa (15 km away). In March its highs average 1.2°C, about as warm as Helsinki, with 37 mm of precipitation.
Among the 13 cities listed in Finland, Helsinki ranks joint 4th of 13 for the warmest March highs and joint 11th of 13 for the driest March (precipitation, lowest first). The mean March high of those 13 cities is 0.0°C; Helsinki is 0.7°C warmer than that mean.
From March to April, average highs rise by 6.2°C to 6.9°C, and monthly precipitation stays at 37 mm.
The annual picture
March in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Helsinki climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -2.1°C-6.0°C | -6.0°C | 48 | 10.9 | 6.87 h |
| February | -2.9°C-7.1°C | -7.1°C | 41 | 9.3 | 9.19 h |
| March, selected | 0.7°C-4.6°C | -4.6°C | 37 | 8.5 | 11.712 h |
| April | 6.9°C0.3°C | 0.3°C | 37 | 8.7 | 14.515 h |
| May | 13.1°C6.0°C | 6.0°C | 44 | 8.9 | 17.217 h |
| June | 17.3°C10.8°C | 10.8°C | 72 | 11.7 | 18.819 h |
| July | 20.8°C14.6°C | 14.6°C | 76 | 11.9 | 18.118 h |
| August | 19.6°C13.9°C | 13.9°C | 76 | 12.3 | 15.716 h |
| September | 14.6°C9.8°C | 9.8°C | 57 | 10.4 | 13.013 h |
| October | 8.1°C4.4°C | 4.4°C | 59 | 11.1 | 10.210 h |
| November | 3.3°C0.3°C | 0.3°C | 59 | 11.5 | 7.68 h |
| December | 0.1°C-3.2°C | -3.2°C | 55 | 12.2 | 6.06 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
March in nearby cities
- Vantaa in MarchFinland · 15 kmHigh 1.2°C · Low -5.1°C · 37 mm precipitation
- Espoo in MarchFinland · 16 kmHigh 0.7°C · Low -4.4°C · 37 mm precipitation
- Tallinn in MarchEstonia · 82 kmHigh 1.9°C · Low -3.8°C · 33 mm precipitation
- Lahti in MarchFinland · 99 kmHigh 0.7°C · Low -5.7°C · 33 mm precipitation
- Kouvola in MarchFinland · 124 kmHigh 0.5°C · Low -5.8°C · 36 mm precipitation
- Turku in MarchFinland · 150 kmHigh 1.7°C · Low -4.7°C · 35 mm precipitation
- Tampere in MarchFinland · 160 kmHigh -0.1°C · Low -5.4°C · 31 mm precipitation
- Lappeenranta in MarchFinland · 203 kmHigh -0.8°C · Low -5.5°C · 36 mm precipitation
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Helsinki) is explained once on the Helsinki year overview and on the Sources, method and limits page.
Vantaa lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.