5-day weather forecast Helsinki Oct 18, 2026
4°Weather forecast Helsinki today Oct 18, 2026: sunny, temperature from 2 °C to 8 °C.
Precipitation probability 31%. Wind up to 4.31 m/s (gusts 10.14 m/s). Air humidity 65–91%, atmospheric pressure 769–778 mm Hg, UV index up to 0.9.
5 days at a glance — tap a day to open it
Sunrise 08:07
Sunset 18:02
Sunset 18:02
First Quarter58% illuminated
Moonrise 16:49 · Moonset 22:51
Moonrise 16:49 · Moonset 22:51
Chart
Table
Sun, Oct 18, 2026
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 5 °C | 12% | 6% | 87% | 769 mm Hg | N 349° 4.31 (10.14) m/s | 0 |
| 01:00 | Clear | 5 °C | 12% | 0% | 86% | 770 mm Hg | N 351° 4 (10.11) m/s | 0 |
| 02:00 | Clear | 4 °C | 11% | 0% | 85% | 770 mm Hg | N 349° 3.89 (9.89) m/s | 0 |
| 03:00 | Clear | 4 °C | 11% | 0% | 84% | 770 mm Hg | N 350° 3.81 (10) m/s | 0 |
| 04:00 | Clear | 4 °C | 11% | 0% | 84% | 770 mm Hg | N 351° 3.39 (9.31) m/s | 0 |
| 05:00 | Clear | 3 °C | 12% | 0% | 86% | 771 mm Hg | N 349° 3 (8.22) m/s | 0 |
| 06:00 | Clear | 2 °C | 13% | 0% | 89% | 771 mm Hg | NNW 347° 2.81 (7.42) m/s | 0 |
| 07:00 | Clear | 2 °C | 13% | 0% | 89% | 772 mm Hg | NNW 346° 2.81 (7.11) m/s | 0 |
| 08:00 | Clear | 2 °C | 13% | 0% | 88% | 773 mm Hg | NNW 347° 2.61 (6.83) m/s | 0 |
| 09:00 |  Sunny | 2 °C | 12% | 0% | 86% | 773 mm Hg | NNW 342° 2.61 (6.39) m/s | 0 |
| 10:00 | Sunny | 4 °C | 9% | 2% | 78% | 773 mm Hg | NNW 347° 2.61 (6.03) m/s | 0.2 |
| 11:00 |  Partly cloudy | 5 °C | 8% | 30% | 70% | 773 mm Hg | NNW 340° 2.89 (5.42) m/s | 0.5 |
| 12:00 | Sunny | 7 °C | 6% | 5% | 68% | 773 mm Hg | NNW 339° 2.69 (4.61) m/s | 0.7 |
| 13:00 | Sunny | 8 °C | 7% | 24% | 68% | 774 mm Hg | NNW 340° 2.61 (4.22) m/s | 0.9 |
| 14:00 |  Cloudy | 8 °C | 13% | 80% | 66% | 774 mm Hg | NNW 335° 2.61 (4) m/s | 0.9 |
| 15:00 | Cloudy | 8 °C | 12% | 72% | 65% | 774 mm Hg | NNW 336° 2.69 (4.03) m/s | 0.7 |
| 16:00 |  Overcast | 8 °C | 16% | 90% | 69% | 775 mm Hg | NNW 345° 2.61 (4.64) m/s | 0.4 |
| 17:00 | Overcast | 7 °C | 22% | 100% | 76% | 775 mm Hg | N 353° 2.11 (4.22) m/s | 0.2 |
| 18:00 | Overcast | 6 °C | 23% | 88% | 83% | 776 mm Hg | N 354° 2.31 (2.81) m/s | 0 |
| 19:00 |  Partly cloudy | 5 °C | 17% | 46% | 87% | 776 mm Hg | N 0° 2.19 (3.31) m/s | 0 |
| 20:00 | Overcast | 4 °C | 29% | 100% | 89% | 776 mm Hg | N 10° 2.31 (3.39) m/s | 0 |
| 21:00 | Overcast | 4 °C | 30% | 100% | 90% | 777 mm Hg | NNE 13° 2.11 (3.03) m/s | 0 |
| 22:00 | Overcast | 4 °C | 30% | 100% | 91% | 777 mm Hg | NNE 26° 2.11 (2.5) m/s | 0 |
| 23:00 | Overcast | 4 °C | 31% | 100% | 91% | 778 mm Hg | NNE 28° 1.89 (2.31) m/s | 0 |
Sun, Oct 18, 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 2 to 11 °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 75%. 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 2 to 11 °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 6 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 75%) 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.
Will I need an umbrella or sunscreen in Helsinki this week?
Rain reaches a 75% chance across the next 5 days, so pack something waterproof for the wettest of them — the daily strip above shows which. Today’s UV index peaks at 0.9; sunscreen is worth it from about 3 upwards.
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.