5-day weather forecast Helsinki Oct 4, 2026
16°Weather forecast Helsinki Sunday Oct 4, 2026: mist, temperature from 9 °C to 16 °C.
Precipitation probability 38%. Wind up to 5 m/s (gusts 9.5 m/s). Air humidity 68–95%, atmospheric pressure 761–766 mm Hg, UV index up to 1.3.
5 days at a glance — tap a day to open it
Sunrise 07:33
Sunset 18:44
Sunset 18:44
Last Quarter34% illuminated
Moonrise 22:34 · Moonset 17:33
Moonrise 22:34 · Moonset 17:33
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Mist | 10 °C | 38% | 99% | 95% | 766 mm Hg | WSW 243° 2.61 (7.61) m/s | 0 |
| 01:00 | Mist | 10 °C | 38% | 100% | 95% | 766 mm Hg | WSW 240° 2.61 (7.83) m/s | 0 |
| 02:00 | Mist | 10 °C | 38% | 100% | 95% | 766 mm Hg | WSW 239° 2.61 (7.89) m/s | 0 |
| 03:00 | Mist | 11 °C | 38% | 100% | 95% | 765 mm Hg | WSW 240° 2.5 (7.22) m/s | 0 |
| 04:00 | Mist | 11 °C | 38% | 100% | 95% | 765 mm Hg | WSW 244° 2.5 (6.92) m/s | 0 |
| 05:00 | Mist | 11 °C | 38% | 100% | 94% | 764 mm Hg | WSW 248° 2.61 (7) m/s | 0 |
| 06:00 | Mist | 11 °C | 38% | 100% | 94% | 764 mm Hg | WSW 254° 2.61 (7.92) m/s | 0 |
| 07:00 | Mist | 10 °C | 35% | 87% | 95% | 764 mm Hg | WSW 257° 2.81 (8.69) m/s | 0 |
| 08:00 | Mist | 10 °C | 20% | 5% | 95% | 764 mm Hg | WSW 257° 2.89 (9.11) m/s | 0 |
| 09:00 |  Sunny | 11 °C | 14% | 5% | 91% | 764 mm Hg | WSW 257° 3.19 (9.31) m/s | 0.2 |
| 10:00 | Sunny | 12 °C | 11% | 5% | 85% | 764 mm Hg | WSW 253° 3.39 (9.11) m/s | 0.4 |
| 11:00 | Sunny | 14 °C | 9% | 5% | 78% | 764 mm Hg | WSW 250° 4 (8.31) m/s | 0.8 |
| 12:00 | Sunny | 15 °C | 7% | 10% | 72% | 764 mm Hg | WSW 248° 4.39 (8.11) m/s | 1.1 |
| 13:00 |  Partly cloudy | 15 °C | 9% | 47% | 68% | 764 mm Hg | WSW 243° 4.69 (7.69) m/s | 1.3 |
| 14:00 |  Cloudy | 16 °C | 15% | 85% | 68% | 764 mm Hg | WSW 237° 5 (7.61) m/s | 1.2 |
| 15:00 |  Overcast | 15 °C | 18% | 96% | 72% | 764 mm Hg | SW 234° 5 (7.81) m/s | 0.9 |
| 16:00 | Cloudy | 14 °C | 18% | 76% | 78% | 763 mm Hg | SW 228° 4.81 (8.19) m/s | 0.6 |
| 17:00 | Cloudy | 14 °C | 18% | 67% | 83% | 763 mm Hg | SW 231° 4.69 (9.33) m/s | 0.3 |
| 18:00 |  Patchy rain possible | 13 °C | 29% (0.02 mm/hr) | 98% | 87% | 763 mm Hg | SW 235° 4.31 (9.5) m/s | 0 |
| 19:00 |  Cloudy | 11 °C | 22% | 74% | 87% | 761 mm Hg | WNW 298° 3.61 (8) m/s | 0 |
| 20:00 |  Clear | 11 °C | 14% | 24% | 86% | 762 mm Hg | WNW 293° 3.39 (8.33) m/s | 0 |
| 21:00 | Cloudy | 10 °C | 23% | 72% | 89% | 762 mm Hg | W 281° 2.89 (8.11) m/s | 0 |
| 22:00 |  Overcast | 9 °C | 30% | 100% | 90% | 762 mm Hg | WNW 286° 3.11 (7.81) m/s | 0 |
| 23:00 |  Partly cloudy | 9 °C | 17% | 31% | 91% | 762 mm Hg | WNW 286° 2.81 (7.11) 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.