Rauma weather in August

In August, Rauma sees average daytime highs of 18°C and overnight lows near 15°C, with 71 mm of rain across 12.4 wet days and about 15.5 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 16°C by the end. The sky is clear or mostly clear about 31% of the time in August, and the air most often feels dry.

Daylight stretches from about 16 h 54 min at the start of August to 14 h 06 min by month's end. Set against the rest of the year, August is Rauma's 4th-clearest and 9th-windiest month. For the whole year in context, see Rauma's year-round climate.

Daytime high
18°
1st warmest
Overnight low
15°
12th coldest
Rainfall
71 mm
12.4 wet days
Daylight
15 h 30 min
4:52 AM – 8:24 PM
Cloud cover
58%
4th clearest
Wind
18 km/h
9th windiest
Solar energy
4.41 kWh/m²
Travel score
5.5
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 16°C by the end.

A typical August day in Rauma reaches about 18°C in the afternoon and slips back to 15°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 21°C. Set against its neighbours, August runs on par with July and about 4°C warmer than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11916
21916
31916
41916
51916
61916
71916
81915
91915
101815
111815
121815
131815
141815
151815
161815
171815
181815
191815
201814
211714
221714
231714
241714
251714
261714
271714
281714
291713
301613
311613

How August really feels in Rauma

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August 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 August compares with the rest of the year at a glance. August is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-0° / -3°4510.996.10.0
Feb-1° / -5°348.47.58.50.0
Mar / -3°338.25.711.30.0
Apr / 327.41.814.30.2
May / 387.40.1172.0
Jun14° / 11°559.4018.74.0
Jul18° / 15°6410.30185.8
Aug18° / 15°7112.4015.55.5
Sep14° / 11°6410.6012.63.8
Oct / 7312.70.79.61.4
Nov / 6312.53.36.90.1
Dec / -1°5712.96.65.30.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 21% of August, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35545
45545
55545
65545
75545
85545
95545
105545
115545
125545
135545
145545
155545
165446
175446
185248
195248
205149
215050
224951
234951
244852
254654
264555
274555
284555
294555
304456
314357

Chance of precipitation in August

Any precipitation

Rauma gets around 71 mm of rain over 12.4 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 40% and peaks near 44% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
134
234
334
435
535
635
736
836
937
1037
1138
1238
1339
1439
1540
1640
1741
1841
1941
2042
2142
2243
2343
2444
2544
2644
2744
2844
2944
3043
3143

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the dry band about 48% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13342214
23342204
33442204
43442203
53542193
63642193
73742182
83842182
93942172
104042172
114142161
124241151
134441141
144541141
154640131
164740121
174840111
184939111
195139100
205238100
21533890
22543790
23553690
24563680
25573580
26593470
27613360
28623260
29643150
30663040
31672940

Wind in August

Winds average 18 km/h in August.

Across August, daily wind ranges from about 17 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2519light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze
3119light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 h 54 min at the start of August to 14 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 168 minutes over August. Sunrise moves from 4:13 AM to 5:31 AM, and sunset from 9:07 PM to 7:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.94:139:07
216.84:169:04
316.74:189:01
416.64:218:59
516.54:238:56
616.54:268:53
716.44:298:51
816.34:318:48
916.24:348:45
1016.14:368:42
1116.04:398:39
1215.94:418:36
1315.84:448:33
1415.74:478:30
1515.64:498:27
1615.54:528:24
1715.54:548:21
1815.44:578:18
1915.35:008:15
2015.25:028:12
2115.15:058:09
2215.05:078:06
2314.95:108:03
2414.85:128:00
2514.75:157:57
2614.65:187:53
2714.55:207:50
2814.45:237:47
2914.35:257:44
3014.25:287:41
3114.15:317:37

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.41 kWh/m².

For context, solar energy here swings from a low near 0.13 kWh/m² to a high of 6.13 kWh/m² in June across the year — August's 4.41 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.1Bright
45.1Bright
55.0Bright
65.0Bright
74.9Bright
84.9Bright
94.8Bright
104.8Bright
114.7Bright
124.7Bright
134.6Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.2Bright
214.1Bright
224.0Bright
234.0Moderate
243.9Moderate
253.9Moderate
263.8Moderate
273.7Moderate
283.6Moderate
293.6Moderate
303.5Moderate
313.5Moderate
Planning a trip in August

Is August a good time to visit Rauma?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.5
Sightseeing
2nd-best month of the year
1.7
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Rauma for sightseeing.

What to pack for Rauma in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Rauma sees daytime highs around 18°C and nights near 15°C. Worth packing: rain gear. About 12 days see rain.

rain gear

Sea temperature near Rauma in August

The nearest coast averages about 17°C in August — 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.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan2Bracing
Feb1Bracing
Mar1Bracing
Apr2Bracing
May5Bracing
Jun10Bracing
Jul15Cool
Aug17Cool
Sep14Bracing
Oct10Bracing
Nov7Bracing
Dec4Bracing

UV index in Rauma in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJun 15UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar1Low
Apr2Moderate
May4Moderate
Jun5Moderate
Jul4Moderate
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

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.

VammalaNaantaliSastamalaRaisioTurkuLietoLoimaa

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.

3 km
43 m
16 km
58 m
80 km
171 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Pori 42 km · Vammala 78 km · Naantali 78 km · Sastamala 79 km · Raisio 80 km · Turku 86 km · Lieto 86 km · Loimaa 89 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
Lutheran 67%none 31%other 2%Greek Orthodox 1%

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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).