Helsinki Weather in July
Finland · Subarctic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
July in Helsinki sees average temperatures ranging from a low of 14.4°C (57.9°F) to a high of 20.9°C (69.6°F), with a mean of 17.9°C (64.2°F). Compared to the annual average of 6.8°C (44.2°F), this month is 11.1°C warmer than the yearly norm. This is the hottest month of the year, reaching 20.9°C (69.6°F) on average. Precipitation averages 79.9mm, making it approximately 11.0mm wetter than the monthly average of 69.0mm. The city receives an average of 13.8 hours of sunshine per day during July, with relative humidity averaging 75.2%. Wind speeds reach an average maximum of 21.4 km/h. For travelers, this month offers a hottest month of the year experience in Helsinki, with wetter-than-average conditions compared to the rest of the year.
If you're planning outdoor activities in Helsinki, daylight is the variable that matters most. I did a sea kayak tour in June at 10pm — full sun, 18°C, surreal. December gives you 6 hours of gray light, which limits everything. The Nordic summer (June-August) is the outdoor window: 18-22°C, 19 hours of daylight, perfect for island-hopping by ferry. Winter is its own adventure: -5°C, snow cover from January-March, and the sauna-ice-swim cycle is a Helsinki essential. Pack windproof layers year-round — the Baltic breeze cuts hard. September brings fall colors and fewer tourists; my favorite hiking month.
July vs Adjacent Months
| Metric | June | July | August |
|---|---|---|---|
| Mean Temp | 16.7°C (62.1°F) | 17.9°C (64.2°F) | 17.2°C (63.0°F) |
| Rainfall | 49.8mm | 79.9mm | 97.1mm |
| Sunshine | 15.6 hrs | 13.8 hrs | 11.1 hrs |
| Humidity | 69.6% | 75.2% | 79.5% |
| Wind | 20.4 km/h | 21.4 km/h | 21.3 km/h |
| Rainy Days | 12.0 | 20.4 | 19.6 |
Seasonal Context
July falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Helsinki in July, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Helsinki in July?
The average temperature in Helsinki during July ranges from 14.4°C (57.9°F) to 20.9°C (69.6°F), with a mean of 17.9°C (64.2°F).
How much does it rain in Helsinki in July?
Helsinki receives an average of 79.9mm of precipitation in July, spread across approximately 20.4 rainy days.
What should I pack for Helsinki in July?
Based on July weather data, pack layers including light jackets and t-shirts, plus an umbrella.
Is July a good time to visit Helsinki?
July is a good time to visit Helsinki, with comfortable temperatures and manageable rainfall. However, it is the hottest month — consider early morning or evening activities.
Other Months for Helsinki
Cities with Similar July Climate (Subarctic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 60.17°, 24.94°. Timezone: Europe/Helsinki. Last updated: 2026-07-30.