5-day weather forecast Helsinki 20-08-2026
Weather forecast Helsinki today 20.08.2026: overcast, temperature from 10 °C to 17 °C.
Precipitation probability 58%. Wind up to 3.81 m/s (gusts 6.72 m/s). Air humidity 54–96%, atmospheric pressure 749–751 mm Hg, UV index up to 1.4.
5 days at a glance — tap a day to open it
Sunrise 05:46
Sunset 21:00
Sunset 21:00
First Quarter58% illuminated
Moonrise 17:45 · Moonset 21:36
Moonrise 17:45 · Moonset 21:36
Chart
Table
Thu, Aug 20, 2026
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 11 °C | 6% | 0% | 72% | 751 mm Hg | W 275° 2.69 (6) m/s | 0 |
| 01:00 | Clear | 11 °C | 7% | 0% | 74% | 751 mm Hg | W 277° 2.31 (4.5) m/s | 0 |
| 02:00 | Clear | 10 °C | 8% | 1% | 76% | 751 mm Hg | W 277° 2 (2.22) m/s | 0 |
| 03:00 | Clear | 10 °C | 9% | 5% | 77% | 751 mm Hg | W 275° 1.5 (1.61) m/s | 0 |
| 04:00 | Clear | 10 °C | 9% | 5% | 79% | 751 mm Hg | W 259° 1 (1.11) m/s | 0 |
| 05:00 | Clear | 10 °C | 10% | 8% | 81% | 751 mm Hg | W 260° 0.5 (0.61) m/s | 0 |
| 06:00 |  Cloudy | 10 °C | 18% | 69% | 82% | 751 mm Hg | NNE 28° 0.31 (3.31) m/s | 0 |
| 07:00 |  Partly cloudy | 11 °C | 10% | 25% | 77% | 750 mm Hg | E 83° 0.81 (0.92) m/s | 0.2 |
| 08:00 |  Overcast | 14 °C | 17% | 90% | 70% | 750 mm Hg | ESE 108° 1.19 (2.03) m/s | 0.4 |
| 09:00 | Overcast | 15 °C | 16% | 100% | 66% | 750 mm Hg | ESE 121° 1.89 (2.83) m/s | 0.9 |
| 10:00 | Overcast | 16 °C | 15% | 100% | 61% | 750 mm Hg | SE 132° 2.81 (3.42) m/s | 1.4 |
| 11:00 | Overcast | 17 °C | 13% | 100% | 54% | 750 mm Hg | SE 134° 3.19 (3.83) m/s | 1.3 |
| 12:00 |  Patchy rain possible | 17 °C | 14% (0.02 mm/hr) | 100% | 54% | 750 mm Hg | SE 142° 3.81 (4.39) m/s | 0.9 |
| 13:00 | Patchy rain possible | 15 °C | 24% (0.07 mm/hr) | 100% | 70% | 750 mm Hg | SSE 152° 3 (4.31) m/s | 0.5 |
| 14:00 |  Light rain shower | 14 °C | 41% (0.22 mm/hr) | 100% | 82% | 750 mm Hg | E 101° 1.81 (3.03) m/s | 0.5 |
| 15:00 | Patchy rain possible | 13 °C | 38% (0.12 mm/hr) | 100% | 86% | 750 mm Hg | ESE 105° 2.19 (4.22) m/s | 0.5 |
| 16:00 | Overcast | 13 °C | 27% | 100% | 86% | 750 mm Hg | E 89° 2.5 (4.83) m/s | 0.4 |
| 17:00 | Light rain shower | 13 °C | 58% (0.41 mm/hr) | 91% | 95% | 749 mm Hg | NE 55° 3.5 (6.72) m/s | 0.5 |
| 18:00 | Light rain shower | 14 °C | 44% (0.34 mm/hr) | 58% | 93% | 749 mm Hg | NE 48° 3.19 (4.69) m/s | 0.5 |
| 19:00 | Partly cloudy | 15 °C | 13% | 48% | 78% | 750 mm Hg | ESE 103° 2.81 (4) m/s | 0.3 |
| 20:00 | Overcast | 14 °C | 30% | 92% | 94% | 749 mm Hg | N 2° 2.39 (3.53) m/s | 0.1 |
| 21:00 |  Overcast | 13 °C | 30% | 91% | 94% | 749 mm Hg | N 352° 2.69 (4.31) m/s | 0 |
| 22:00 |  Mist | 13 °C | 33% | 78% | 96% | 749 mm Hg | NNW 344° 2.31 (4.42) m/s | 0 |
| 23:00 | Mist | 12 °C | 26% | 49% | 95% | 750 mm Hg | NNW 327° 2.5 (4.61) m/s | 0 |
Thu, Aug 20, 2026
Frequently asked questions about the 5-day weather in Helsinki
What will the weather be like in Helsinki over the next 5 days?
Over the next 5 days in Helsinki the temperature is expected to range from about 10 to 19 °C. See the detailed hourly forecast for each of the 5 days in the charts above.
On which of the next 5 days will it rain in Helsinki?
The chance of rain in Helsinki over the next 5 days reaches 58%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.
How accurate is the 5-day weather forecast for Helsinki?
A 5-day forecast is fairly reliable: the first 2–3 days are usually very accurate, while days 4–5 may be refined. The data is updated several times a day, so check back before important plans.
Which of the next 5 days in Helsinki will be the warmest and which the coolest?
Over the next 5 days the temperature in Helsinki ranges from about 10 to 19 °C. Compare the warmest and coolest day on the temperature chart above.
Will it be windy in Helsinki over the next 5 days?
Over the next 5 days the wind in Helsinki picks up to 5 m/s. The windiest days are easy to spot on the wind chart above.
Which day of the week in Helsinki is best for a walk or a trip?
For a walk or a trip, pick the days with the lowest chance of rain (up to 58%) and light wind — easy to compare on the 5-day charts above.
How can I best use the 5-day forecast for Helsinki?
The first 2–3 days are reliable enough for firm decisions, while days 4–5 are a guide that sharpens as they approach. The forecast is updated several times a day, so check again before important plans.
Helsinki on the map
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.