Forssa in Summer
In summer (June, July and August), Forssa sees average daytime highs around 20°C and overnight lows near 10°C, with 241 mm of rain over about 38 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 20°C. The sky is clear or mostly clear about 20% of the time across summer, and the air most often feels dry.
Summer is Forssa's best season of the year to visit on our travel score. For the whole year in context, see Forssa's year-round climate.
- Avg daytime high
- 20°C
- warmest season of the year
- Avg overnight low
- 10°C
- Rainfall
- 241 mm
- 38 wet days
- Avg wind
- 11 km/h
- Travel score
- 5.8
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Forssa in Summer
Across summer, daytime highs hold fairly steady around 20°C.
A typical summer day in Forssa reaches about 20°C and drops to 10°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Forssa
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Forssa weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -3° / -7° | 45 | 10.3 | 9.8 | 6.2 | 0.0 |
| Feb | -3° / -8° | 36 | 8.2 | 8.6 | 8.5 | 0.0 |
| Mar | 2° / -6° | 35 | 8.3 | 7.2 | 11.3 | 0.0 |
| Apr | 8° / -1° | 36 | 8.7 | 3.1 | 14.2 | 1.5 |
| May | 15° / 4° | 47 | 9.8 | 0.2 | 16.9 | 4.5 |
| Jun | 19° / 9° | 77 | 12 | 0 | 18.6 | 5.6 |
| Jul | 21° / 12° | 85 | 13 | 0 | 17.9 | 6.1 |
| Aug | 20° / 10° | 80 | 12.5 | 0 | 15.5 | 5.8 |
| Sep | 15° / 7° | 55 | 9.7 | 0 | 12.6 | 4.2 |
| Oct | 8° / 2° | 57 | 10.6 | 1.1 | 9.7 | 1.2 |
| Nov | 3° / -1° | 50 | 10.7 | 4.8 | 7 | 0.0 |
| Dec | -1° / -5° | 52 | 11.3 | 8.8 | 5.4 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 20% of the time across summer.
Chance of precipitation in Summer
Forssa gets around 241 mm of rain over 38 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 11 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 18 h 06 min in early June to 14 h 06 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.8 kWh/m².
Is summer a good time to visit Forssa?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Forssa for sightseeing.
What to pack for Forssa in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Forssa sees daytime highs around 20°C and nights near 10°C. Worth packing: rain gear and sun protection. About 38 days see rain.
UV index in Forssa in Summer
Clear-sky midday UV across summer averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Forssa peaks around June 17 at about 5 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 0 | 1 | 2 | 3 | 4 | 5 | 5 | 4 | 2 | 1 | 0 | 0 |
| Level | Low | Low | Low | Moderate | Moderate | High | Moderate | Moderate | Moderate | Low | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 0 | Low |
| Feb | 1 | Low |
| Mar | 2 | Low |
| Apr | 3 | Moderate |
| May | 4 | Moderate |
| Jun | 5 | High |
| Jul | 5 | Moderate |
| Aug | 4 | Moderate |
| Sep | 2 | Moderate |
| Oct | 1 | Low |
| Nov | 0 | Low |
| Dec | 0 | Low |
Where is Forssa?
Forssa sits at 60.8°N, 23.6°E, 133 m above sea level, in Finland. The nearest listed city is Loimaa, 31 km away.
Topography around Forssa
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Forssa.
Within 3 km, the terrain around Forssa has only modest variations in elevation — a maximum elevation change of 55 m around an average of 111 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 88 m; within 80 km, only modest variations in elevation — a maximum elevation change of 200 m.
The land around Forssa is covered by trees (58%) within 3 km, trees (63%) and cropland (21%) within 16 km, and trees (69%) within 80 km.
Finland travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 85% of US
- price level, 2025
- GDP per capita
- $56,149
- 2025
- Happiness
- 7.8 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1
- per 100k, 2023
- Road deaths
- 3.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 603
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Forssa (60.8146°, 23.6215°, elevation 133 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.