Rauma in Summer
In summer (June, July and August), Rauma sees average daytime highs around 16°C and overnight lows near 13°C, with 191 mm of rain over about 32 wet days across the season. It is the warmest season of the year and the 2nd-wettest season.
Over the season highs climb from about 12°C in early June to 16°C by late August. The sky is clear or mostly clear about 34% of the time across summer, and the air most often feels dry.
Summer is Rauma's best season of the year to visit on our travel score. For the whole year in context, see Rauma's year-round climate.
- Avg daytime high
- 16°C
- warmest season of the year
- Avg overnight low
- 13°C
- Rainfall
- 191 mm
- 32 wet days
- Avg wind
- 17 km/h
- Travel score
- 5.1
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Rauma in Summer
Over the season highs climb from about 12°C in early June to 16°C by late August.
A typical summer day in Rauma reaches about 16°C and drops to 13°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Rauma
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.
Rauma 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 | -0° / -3° | 45 | 10.9 | 9 | 6.1 | 0.0 |
| Feb | -1° / -5° | 34 | 8.4 | 7.5 | 8.5 | 0.0 |
| Mar | 1° / -3° | 33 | 8.2 | 5.7 | 11.3 | 0.0 |
| Apr | 5° / 1° | 32 | 7.4 | 1.8 | 14.3 | 0.2 |
| May | 9° / 6° | 38 | 7.4 | 0.1 | 17 | 2.0 |
| Jun | 14° / 11° | 55 | 9.4 | 0 | 18.7 | 4.0 |
| Jul | 18° / 15° | 64 | 10.3 | 0 | 18 | 5.8 |
| Aug | 18° / 15° | 71 | 12.4 | 0 | 15.5 | 5.5 |
| Sep | 14° / 11° | 64 | 10.6 | 0 | 12.6 | 3.8 |
| Oct | 8° / 6° | 73 | 12.7 | 0.7 | 9.6 | 1.4 |
| Nov | 4° / 2° | 63 | 12.5 | 3.3 | 6.9 | 0.1 |
| Dec | 2° / -1° | 57 | 12.9 | 6.6 | 5.3 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 34% of the time across summer.
Chance of precipitation in Summer
Rauma gets around 191 mm of rain over 32 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 17 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 18 h 12 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 5.4 kWh/m².
Is summer a good time to visit Rauma?
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 Rauma for sightseeing.
What to pack for Rauma in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Rauma sees daytime highs around 16°C and nights near 13°C. Pack sun protection. Worth having: a warm layer and rain gear. About 32 days see rain.
Sea temperature near Rauma in Summer
The nearest coast averages about 14°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 17°C and coldest in March near 1°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 2 | 1 | 1 | 2 | 5 | 10 | 15 | 17 | 14 | 10 | 7 | 4 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 2 | Bracing |
| Feb | 1 | Bracing |
| Mar | 1 | Bracing |
| Apr | 2 | Bracing |
| May | 5 | Bracing |
| Jun | 10 | Bracing |
| Jul | 15 | Cool |
| Aug | 17 | Cool |
| Sep | 14 | Bracing |
| Oct | 10 | Bracing |
| Nov | 7 | Bracing |
| Dec | 4 | Bracing |
UV index in Rauma in Summer
Clear-sky midday UV across summer averages around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Rauma peaks around June 15 at about 5 (moderate) — a little sun protection helps at midday. It bottoms out near December 19 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 | 1 | 2 | 4 | 5 | 4 | 4 | 2 | 1 | 0 | 0 |
| Level | Low | Low | Low | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Low | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 0 | Low |
| Feb | 1 | Low |
| Mar | 1 | Low |
| Apr | 2 | Moderate |
| May | 4 | Moderate |
| Jun | 5 | Moderate |
| Jul | 4 | Moderate |
| Aug | 4 | Moderate |
| Sep | 2 | Moderate |
| Oct | 1 | Low |
| Nov | 0 | Low |
| Dec | 0 | Low |
Where is Rauma?
Rauma sits at 61.1°N, 21.5°E, 14 m above sea level, in Finland. The nearest listed city is Pori, 42 km away.
Topography around Rauma
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rauma.
Within 3 km, the terrain around Rauma has only modest variations in elevation — a maximum elevation change of 43 m around an average of 13 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 58 m; within 80 km, only modest variations in elevation — a maximum elevation change of 171 m.
The land around Rauma is covered by trees (54%) and artificial surfaces (29%) within 3 km, trees (53%) and water (31%) within 16 km, and trees (49%) and water (37%) 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 Rauma (61.1272°, 21.5113°, elevation 14 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.