5-day weather forecast Helsinki 21-03-2026

Weather forecast Helsinki today 21.03.2026: sunny, temperature from 1 °C to 5 °C.

No precipitation expected. Wind up to 6.11 m/s (gusts 10.42 m/s). Air humidity 64–86%, atmospheric pressure 765–767 mm Hg, UV index up to 1.7.

Sunrise 06:21
Sunset 18:36
Chart
Table
Type of temperature:
°C
°F
Sat, 21 Mar, 2026
TemperaturePrecipitationCloud coverHumidityPressureWindUV Index
00:00Weather
Clear
1 °C0% 12%83%766 mm HgW 271° 2.5 (5.25) m/s0
01:00Weather
Clear
0 °C0% 0%86%765 mm HgW 259° 2.61 (5.47) m/s0
02:00Weather
Clear
1 °C0% 12%85%766 mm HgWSW 251° 2.69 (5.67) m/s0
03:00Weather
Clear
1 °C0% 11%84%766 mm HgWSW 247° 2.89 (6.08) m/s0
04:00Weather
Clear
0 °C0% 7%84%766 mm HgWSW 245° 3 (6.31) m/s0
05:00Weather
Clear
0 °C0% 7%84%767 mm HgSW 236° 3.11 (6.5) m/s0
06:00Weather
Clear
0 °C0% 7%83%767 mm HgSW 233° 3.39 (7.14) m/s0
07:00Weather
Sunny
1 °C0% 6%82%767 mm HgSW 230° 3.81 (7.97) m/s0
08:00Weather
Sunny
2 °C0% 5%77%767 mm HgSW 232° 4.19 (7.81) m/s0.3
09:00Weather
Sunny
3 °C0% 5%73%767 mm HgSW 233° 4.61 (7.64) m/s0.7
10:00Weather
Sunny
4 °C0% 5%69%766 mm HgSW 230° 5.19 (8.25) m/s1.1
11:00Weather
Sunny
4 °C0% 5%67%766 mm HgSW 228° 5.69 (8.89) m/s1.5
12:00Weather
Sunny
5 °C0% 5%66%767 mm HgSW 229° 6 (9.19) m/s1.7
13:00Weather
Sunny
5 °C0% 5%64%767 mm HgSW 230° 6.11 (9.28) m/s1.7
14:00Weather
Sunny
5 °C0% 5%64%766 mm HgSW 230° 6.11 (9.36) m/s1.4
15:00Weather
Sunny
5 °C0% 4%65%766 mm HgSW 230° 6 (9.25) m/s1
16:00Weather
Sunny
4 °C0% 4%65%766 mm HgSW 232° 6 (9.67) m/s0.5
17:00Weather
Sunny
4 °C0% 5%65%766 mm HgSW 233° 5.89 (9.94) m/s0.2
18:00Weather
Sunny
3 °C0% 5%67%766 mm HgSW 235° 5.69 (10.11) m/s0
19:00Weather
Clear
3 °C0% 5%69%766 mm HgSW 229° 5.5 (10.11) m/s0
20:00Weather
Clear
2 °C0% 6%70%766 mm HgSW 227° 5.5 (10.03) m/s0
21:00Weather
Clear
2 °C0% 8%73%766 mm HgSW 226° 5.31 (9.56) m/s0
22:00Weather
Clear
2 °C0% 8%75%766 mm HgSW 221° 5.69 (10) m/s0
23:00Weather
Clear
2 °C0% 10%76%765 mm HgSW 222° 6 (10.42) m/s0
Sat, 21 Mar, 2026

Frequently asked questions about the weather in Helsinki

Today in Helsinki the temperature ranges from 1 °C to 5 °C, wind up to 6.11 m/s. Check the detailed hourly forecast above for more information.

The precipitation probability in Helsinki today is 0%. View the full multi-day forecast above to see the rain chances for each upcoming day.

The wind speed in Helsinki today reaches up to 6.11 m/s with gusts up to 10.42 m/s. Check the detailed wind chart above for hourly wind data.

The air humidity in Helsinki today ranges from 64% to 86%. View the humidity chart above for hourly details.

The UV index in Helsinki today reaches up to 1.7. Check the UV index chart above for hourly values throughout the day.

The atmospheric pressure in Helsinki today ranges from 765 to 767 mm Hg. View the pressure chart above for hourly readings.

Cloud cover in Helsinki today reaches up to 12%. Check the cloud cover chart above for hourly details throughout the day.

Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.