Raseborg weather in August

In August, Raseborg sees average daytime highs of 20°C and overnight lows near 13°C, with 66 mm of rain across 11.4 wet days and about 15.4 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 18°C by the end. The sky is clear or mostly clear about 26% of the time in August, and the air most often feels dry.

Daylight stretches from about 16 h 36 min at the start of August to 14 hours by month's end. Set against the rest of the year, August is Raseborg's 4th-clearest and 11th-windiest month. For the whole year in context, see Raseborg's year-round climate.

Daytime high
20°
2nd warmest
Overnight low
13°
11th coldest
Rainfall
66 mm
11.4 wet days
Daylight
15 h 24 min
4:49 AM – 8:11 PM
Cloud cover
61%
4th clearest
Wind
14 km/h
11th windiest
Solar energy
4.33 kWh/m²
Travel score
6.1
out of 10

Raseborg is town in the region of Uusimaa in Finland.

Density
22/km²
people per km²
Founded
2009

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 21°C in the first days to 18°C by the end.

A typical August day in Raseborg reaches about 20°C in the afternoon and slips back to 13°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 24°C. Set against its neighbours, August runs about 1°C cooler than July and about 5°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12214
22214
32214
42114
52114
62114
72113
82113
92113
102113
112113
122113
132113
142013
152013
162013
172013
182013
192012
202012
211912
221912
231912
241912
251912
261912
271912
281812
291811
301811
311811

How August really feels in Raseborg

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.

Raseborg weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -5°5110.98.96.40.0
Feb-2° / -6°4097.98.60.0
Mar / -4°378.15.711.30.0
Apr / 348.31.914.11.1
May13° / 378.10.116.74.0
Jun18° / 10°539.4018.35.7
Jul21° / 13°579.5017.76.6
Aug20° / 13°6611.4015.46.1
Sep15° / 5310.1012.64.5
Oct / 6510.90.59.81.8
Nov / 63123.87.20.1
Dec / -2°5912.875.70.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25248
35248
45149
55149
65149
75050
85050
94951
104951
114951
124951
134852
144852
154753
164654
174753
184654
194456
204456
214357
224258
234159
244060
253961
263862
273763
283763
293664
303664
313664

Chance of precipitation in August

Any precipitation

Raseborg gets around 66 mm of rain over 11.4 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
131
232
333
434
534
635
736
837
937
1038
1138
1239
1339
1439
1539
1639
1739
1839
1939
2038
2138
2238
2338
2437
2537
2637
2737
2837
2937
3037
3136

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 54% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14537153
24637153
34636152
44736152
54836152
64836152
74836141
84936141
94936141
104937131
114937131
124938120
134938120
145039110
155039110
165139100
175139100
18523990
19523990
20543880
21543880
22563770
23573670
24593560
25603460
26633250
27643150
28653050
29672940
30692740
31712630

Wind in August

Winds average 14 km/h in August.

Across August, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 h 36 min at the start of August to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 156 minutes over August. Sunrise moves from 4:13 AM to 5:26 AM, and sunset from 8:51 PM to 7:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.64:138:51
216.64:168:49
316.54:188:46
416.44:208:44
516.34:238:41
616.24:258:39
716.14:278:36
816.14:308:33
916.04:328:31
1015.94:358:28
1115.84:378:25
1215.74:408:23
1315.64:428:20
1415.54:448:17
1515.54:478:14
1615.44:498:11
1715.34:528:09
1815.24:548:06
1915.14:578:03
2015.04:598:00
2114.95:017:57
2214.85:047:54
2314.75:067:51
2414.75:097:48
2514.65:117:45
2614.55:147:42
2714.45:167:39
2814.35:187:36
2914.25:217:33
3014.15:237:30
3114.05:267:27

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.33 kWh/m².

For context, solar energy here swings from a low near 0.17 kWh/m² to a high of 5.95 kWh/m² in June across the year — August's 4.33 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.1Bright
35.1Bright
45.0Bright
55.0Bright
64.9Bright
74.8Bright
84.8Bright
94.7Bright
104.7Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.4Bright
164.3Bright
174.3Bright
184.2Bright
194.2Bright
204.1Bright
214.0Bright
224.0Moderate
233.9Moderate
243.8Moderate
253.8Moderate
263.7Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.5Moderate
313.4Moderate
Planning a trip in August

Is August a good time to visit Raseborg?

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

6.1
Sightseeing
2nd-best month of the year
3.2
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Raseborg for sightseeing.

What to pack for Raseborg in August

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

In August, Raseborg sees daytime highs around 20°C and nights near 13°C. Worth packing: rain gear. About 11 days see rain.

rain gear

Sea temperature near Raseborg 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
Jan3Bracing
Feb1Bracing
Mar1Bracing
Apr2Bracing
May6Bracing
Jun11Bracing
Jul16Cool
Aug17Cool
Sep15Bracing
Oct11Bracing
Nov8Bracing
Dec5Bracing

UV index in Raseborg in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks 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 Raseborg 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 17UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5High
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Raseborg?

Raseborg sits at 60.0°N, 23.4°E, 19 m above sea level, in Finland. The nearest listed city is Lohja, 46 km away.

VihtiVäståbolandOlari

Topography around Raseborg

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Raseborg.

Within 3 km, the terrain around Raseborg has only modest variations in elevation — a maximum elevation change of 53 m around an average of 11 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 90 m; within 80 km, significant variations in elevation — a maximum elevation change of 286 m.

The land around Raseborg is covered by trees (46%) and water (34%) within 3 km, trees (57%) and water (28%) within 16 km, and water (53%) and trees (36%) within 80 km.

3 km
53 m
16 km
90 m
80 km
286 m
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Lohja 46 km · Salo 48 km · Kirkkonummi 58 km · Vihti 69 km · Espoonlahti 70 km · Espoo 72 km · Väståboland 73 km · Olari 75 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 Raseborg (59.9774°, 23.4397°, elevation 19 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).