5-day weather forecast Helsinki 21-03-2026
Weather forecast Helsinki Saturday 21 March 21.03.2026: sunny, temperature from 1 °C to 6 °C.
No precipitation expected. Wind up to 4.61 m/s (gusts 8.78 m/s). Air humidity 71–89%, atmospheric pressure 768–770 mm Hg, UV index up to 3.
Sunrise 06:33
Sunset 18:26
Sunset 18:26
Chart
Table
Type of temperature:
°C
°FSat, 21 Mar, 2026
| Temperature | Precipitation | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 2 °C | 0% | 12% | 81% | 768 mm Hg | W 267° 3.11 (6.5) m/s | 0 |
| 01:00 | Clear | 1 °C | 0% | 13% | 80% | 768 mm Hg | W 260° 3.11 (6.5) m/s | 0 |
| 02:00 | Clear | 1 °C | 0% | 8% | 80% | 768 mm Hg | WSW 256° 3.19 (6.72) m/s | 0 |
| 03:00 | Clear | 1 °C | 0% | 7% | 81% | 768 mm Hg | WSW 255° 3.31 (6.92) m/s | 0 |
| 04:00 | Clear | 1 °C | 0% | 9% | 84% | 768 mm Hg | WSW 251° 3.19 (6.72) m/s | 0 |
| 05:00 | Clear | 1 °C | 0% | 7% | 87% | 768 mm Hg | WSW 250° 3.31 (6.92) m/s | 0 |
| 06:00 | Clear | 1 °C | 0% | 7% | 88% | 768 mm Hg | WSW 250° 3.31 (6.92) m/s | 0 |
| 07:00 |  Sunny | 1 °C | 0% | 6% | 89% | 768 mm Hg | WSW 246° 3.31 (6.92) m/s | 0 |
| 08:00 | Sunny | 2 °C | 0% | 6% | 86% | 768 mm Hg | WSW 247° 3.39 (6.36) m/s | 0.3 |
| 09:00 | Sunny | 3 °C | 0% | 6% | 81% | 769 mm Hg | WSW 248° 3.61 (5.92) m/s | 0.7 |
| 10:00 | Sunny | 4 °C | 0% | 6% | 78% | 769 mm Hg | WSW 244° 3.69 (5.89) m/s | 1.1 |
| 11:00 | Sunny | 5 °C | 0% | 5% | 75% | 769 mm Hg | WSW 245° 3.81 (5.97) m/s | 1.5 |
| 12:00 | Sunny | 6 °C | 0% | 6% | 73% | 769 mm Hg | WSW 241° 3.89 (6.14) m/s | 1.7 |
| 13:00 | Sunny | 6 °C | 0% | 7% | 71% | 769 mm Hg | SW 236° 4.19 (6.72) m/s | 1.7 |
| 14:00 | Sunny | 6 °C | 0% | 7% | 71% | 769 mm Hg | SW 234° 4.5 (7.36) m/s | 1.4 |
| 15:00 | Sunny | 6 °C | 0% | 6% | 71% | 768 mm Hg | WSW 237° 4.61 (7.72) m/s | 3 |
| 16:00 | Sunny | 6 °C | 0% | 5% | 73% | 768 mm Hg | SW 236° 4.61 (8.03) m/s | 3 |
| 17:00 | Sunny | 5 °C | 0% | 5% | 76% | 768 mm Hg | SW 235° 4.61 (8.53) m/s | 3 |
| 18:00 | Sunny | 4 °C | 0% | 5% | 79% | 769 mm Hg | SW 236° 4.39 (8.78) m/s | 2 |
| 19:00 | Clear | 3 °C | 0% | 5% | 82% | 769 mm Hg | WSW 241° 4.19 (8.72) m/s | 0 |
| 20:00 | Clear | 3 °C | 0% | 6% | 82% | 769 mm Hg | WSW 249° 3.89 (8.11) m/s | 0 |
| 21:00 | Clear | 3 °C | 0% | 6% | 80% | 770 mm Hg | WSW 249° 3.61 (7.5) m/s | 0 |
| 22:00 | Clear | 2 °C | 0% | 6% | 80% | 770 mm Hg | WSW 249° 3.31 (6.92) m/s | 0 |
| 23:00 | Clear | 2 °C | 0% | 7% | 80% | 770 mm Hg | WSW 249° 3.11 (6.5) m/s | 0 |
Sat, 21 Mar, 2026
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.