5-day weather forecast Helsinki 21-06-2026
Weather forecast Helsinki Sunday, June 21 21.06.2026: sunny, temperature from 14 °C to 21 °C.
Precipitation probability 13%. Wind up to 6.11 m/s (gusts 11.22 m/s). Air humidity 51–99%, atmospheric pressure 761–764 mm Hg, UV index up to 5.7.
Sunrise 03:54
Sunset 22:50
Sunset 22:50
First Quarter48% illuminated
Moonrise 12:42 · Moonset 00:59
Moonrise 12:42 · Moonset 00:59
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Partly cloudy | 17 °C | 13% | 37% | 81% | 764 mm Hg | SW 215° 5.31 (11) m/s | 0 |
| 01:00 | Partly cloudy | 17 °C | 15% | 43% | 83% | 763 mm Hg | SSW 202° 5 (10.17) m/s | 0 |
| 02:00 | Partly cloudy | 16 °C | 16% | 48% | 84% | 762 mm Hg | SSW 204° 5.39 (11.22) m/s | 0 |
| 03:00 |  Light rain | 16 °C | 75% (2.41 mm/hr) | 76% | 87% | 762 mm Hg | SSW 211° 5.61 (11.22) m/s | 0 |
| 04:00 |  Patchy rain possible | 15 °C | 62% (0.63 mm/hr) | 74% | 95% | 762 mm Hg | SW 216° 5.11 (9.72) m/s | 0 |
| 05:00 | Patchy rain possible | 15 °C | 27% (0.01 mm/hr) | 72% | 95% | 762 mm Hg | SSW 206° 4.19 (8.22) m/s | 0 |
| 06:00 |  Partly cloudy | 15 °C | 21% | 47% | 94% | 762 mm Hg | SSW 212° 4.61 (8.75) m/s | 0.1 |
| 07:00 |  Light rain shower | 15 °C | 70% (0.68 mm/hr) | 100% | 96% | 762 mm Hg | SW 225° 5.11 (8.72) m/s | 0.1 |
| 08:00 | Light rain shower | 15 °C | 61% (0.39 mm/hr) | 100% | 98% | 762 mm Hg | SW 220° 4.61 (7.67) m/s | 0.5 |
| 09:00 | Light rain shower | 15 °C | 73% (0.78 mm/hr) | 100% | 99% | 762 mm Hg | SW 228° 5.69 (9.28) m/s | 1.2 |
| 10:00 |  Overcast | 15 °C | 35% | 100% | 99% | 761 mm Hg | SW 224° 5 (8.11) m/s | 2.2 |
| 11:00 | Overcast | 16 °C | 34% | 100% | 98% | 762 mm Hg | WSW 238° 4.61 (7.33) m/s | 4 |
| 12:00 |  Cloudy | 17 °C | 26% | 75% | 94% | 762 mm Hg | WSW 239° 4.89 (7.44) m/s | 5 |
| 13:00 |  Sunny | 19 °C | 10% | 10% | 80% | 762 mm Hg | WSW 242° 5.19 (7.5) m/s | 5.7 |
| 14:00 | Sunny | 20 °C | 7% | 21% | 70% | 762 mm Hg | SW 235° 5.5 (8.39) m/s | 5.6 |
| 15:00 | Sunny | 20 °C | 5% | 6% | 65% | 762 mm Hg | SW 232° 6.11 (9.64) m/s | 5.2 |
| 16:00 | Sunny | 21 °C | 3% | 4% | 59% | 762 mm Hg | WSW 241° 6.11 (9.92) m/s | 4.2 |
| 17:00 | Sunny | 21 °C | 3% | 7% | 56% | 762 mm Hg | WSW 258° 5.5 (9.19) m/s | 3 |
| 18:00 | Sunny | 21 °C | 2% | 3% | 54% | 762 mm Hg | WNW 283° 5.39 (9.39) m/s | 1.9 |
| 19:00 | Sunny | 20 °C | 2% | 0% | 53% | 763 mm Hg | WNW 297° 5.19 (9.67) m/s | 1.1 |
| 20:00 | Sunny | 20 °C | 2% | 0% | 51% | 763 mm Hg | NW 314° 5.19 (9.75) m/s | 0.5 |
| 21:00 | Sunny | 18 °C | 3% | 0% | 55% | 764 mm Hg | NW 317° 5.19 (10.06) m/s | 0.2 |
| 22:00 | Sunny | 16 °C | 3% | 0% | 60% | 764 mm Hg | NW 317° 4.5 (9.14) m/s | 0 |
| 23:00 |  Clear | 14 °C | 5% | 0% | 68% | 764 mm Hg | NW 314° 3.69 (7.78) m/s | 0 |
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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.