Pori weather in August

In August, Pori sees average daytime highs of 19°C and overnight lows near 13°C, with 74 mm of rain across 12.2 wet days and about 15.6 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 17°C by the end. The sky is clear or mostly clear about 25% of the time in August, and the air most often feels dry.

Daylight stretches from about 17 hours at the start of August to 14 h 06 min by month's end. Set against the rest of the year, August is Pori's 4th-clearest and 10th-windiest month. For the whole year in context, see Pori's year-round climate.

Daytime high
19°
2nd warmest
Overnight low
13°
11th coldest
Rainfall
74 mm
12.2 wet days
Daylight
15 h 36 min
4:49 AM – 8:25 PM
Cloud cover
62%
4th clearest
Wind
14 km/h
10th windiest
Solar energy
4.28 kWh/m²
Travel score
5.7
out of 10
Air quality
Excellent
PM10 12.2 µg/m³ · 2019

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 20°C in the first days to 17°C by the end.

A typical August day in Pori reaches about 19°C in the afternoon and slips back to 13°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 23°C. Set against its neighbours, August runs on par with July and about 5°C warmer than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12014
22014
32014
42014
52014
62014
72014
82014
92013
102013
112013
121913
131913
141913
151913
161913
171913
181913
191912
201912
211812
221812
231812
241812
251812
261812
271812
281712
291711
301711
311711

How August really feels in Pori

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.

Pori weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -5°4310.28.560.0
Feb-2° / -6°3487.68.40.0
Mar / -4°338.3611.30.0
Apr / 338.2214.30.8
May12° / 397.80.217.13.3
Jun16° / 10°6010.3018.95.0
Jul20° / 13°7411.7018.16.0
Aug19° / 13°7412.2015.65.7
Sep14° / 6210.2012.64.1
Oct / 6511.50.99.61.3
Nov / 5611.13.76.80.0
Dec / -3°5311.56.85.10.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% 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 54%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35050
45050
55050
64951
74951
84951
94951
104951
114951
125050
134951
144951
154951
164951
174753
184753
194654
204654
214456
224456
234258
244258
254159
264060
273961
283961
293961
303862
313862

Chance of precipitation in August

Any precipitation

Pori gets around 74 mm of rain over 12.2 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 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
236
337
437
537
637
737
837
937
1038
1138
1239
1339
1439
1540
1640
1740
1840
1941
2041
2141
2242
2342
2442
2542
2642
2742
2842
2942
3042
3141

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 58% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14239163
24339163
34339152
44439152
54538142
64638142
74837132
84937131
95136121
105235121
115335111
125434111
135534101
14573391
15583390
16593380
17613270
18613270
19633160
20633160
21653050
22653050
23653050
24672940
25672940
26692830
27702730
28712630
29732520
30742420
31752320

Wind in August

Winds average 14 km/h in August.

Across August, daily wind ranges from about 13 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
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light 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
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 17 hours 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 174 minutes over August. Sunrise moves from 4:10 AM to 5:28 AM, and sunset from 9:08 PM to 7:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
117.04:109:08
216.94:129:05
316.84:159:03
416.74:179:00
516.64:208:57
616.54:238:54
716.44:258:52
816.34:288:49
916.34:308:46
1016.24:338:43
1116.14:368:40
1216.04:388:37
1315.94:418:34
1415.84:448:31
1515.74:468:28
1615.64:498:25
1715.54:528:22
1815.44:548:19
1915.34:578:16
2015.25:008:13
2115.15:028:09
2215.05:058:06
2314.95:078:03
2414.85:108:00
2514.75:137:57
2614.65:157:54
2714.55:187:50
2814.45:217:47
2914.35:237:44
3014.25:267:41
3114.15:287:37

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.28 kWh/m².

For context, solar energy here swings from a low near 0.12 kWh/m² to a high of 5.97 kWh/m² in June across the year — August's 4.28 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
44.9Bright
54.9Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.6Bright
114.6Bright
124.5Bright
134.5Bright
144.4Bright
154.4Bright
164.3Bright
174.3Bright
184.2Bright
194.1Bright
204.1Bright
214.0Bright
223.9Moderate
233.9Moderate
243.8Moderate
253.7Moderate
263.7Moderate
273.6Moderate
283.5Moderate
293.5Moderate
303.4Moderate
313.3Moderate
Planning a trip in August

Is August a good time to visit Pori?

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

5.7
Sightseeing
2nd-best month of the year
2.4
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Pori for sightseeing.

What to pack for Pori in August

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

In August, Pori sees daytime highs around 19°C and nights near 13°C. Worth packing: rain gear. About 12 days see rain.

rain gear

Sea temperature near Pori 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 at the nearest coast (about 25 km away) 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 Pori 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 Pori peaks around June 16 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 16UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar1Low
Apr2Moderate
May4Moderate
Jun5Moderate
Jul4Moderate
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Pori?

Pori sits at 61.5°N, 21.8°E, 20 m above sea level, in Finland. The nearest listed city is Rauma, 42 km away.

NokiaYlöjärviLoimaaPirkkalaLempäälä

Topography around Pori

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

Within 3 km, the terrain around Pori has only modest variations in elevation — a maximum elevation change of 35 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 74 m; within 80 km, significant variations in elevation — a maximum elevation change of 253 m.

The land around Pori is covered by trees (39%) and artificial surfaces (33%) within 3 km, trees (62%) within 16 km, and trees (61%) and water (25%) within 80 km.

3 km
35 m
16 km
74 m
80 km
253 m
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Rauma 42 km · Vammala 62 km · Sastamala 62 km · Nokia 91 km · Ylöjärvi 96 km · Loimaa 98 km · Pirkkala 98 km · Lempäälä 106 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 Pori (61.4807°, 21.7852°, elevation 20 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).