Pärnu weather in August

In August, Pärnu sees average daytime highs of 21°C and overnight lows near 12°C, with 86 mm of rain across 12.8 wet days and about 15.1 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 19°C by the end. The sky is clear or mostly clear about 22% of the time in August, and the air most often feels dry.

Daylight stretches from about 16 h 18 min at the start of August to 13 h 54 min by month's end. Set against the rest of the year, August is Pärnu's 4th-clearest and 11th-windiest month. For the whole year in context, see Pärnu's year-round climate.

Daytime high
21°
2nd warmest
Overnight low
12°
11th coldest
Rainfall
86 mm
12.8 wet days
Daylight
15 h 12 min
4:52 AM – 8:01 PM
Cloud cover
64%
4th clearest
Wind
12 km/h
11th windiest
Solar energy
4.23 kWh/m²
Travel score
6.0
out of 10

Pärnu is city in Estonia.

Density
1,214/km²
people per km²
Founded
1251

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 23°C in the first days to 19°C by the end.

A typical August day in Pärnu reaches about 21°C in the afternoon and slips back to 12°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 26°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)
12313
22313
32313
42313
52213
62213
72213
82213
92213
102212
112212
122212
132212
142112
152112
162112
172112
182112
192112
202112
212111
222011
232011
242011
252011
262011
272011
281911
291911
301910
311910

How August really feels in Pärnu

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.

Pärnu 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° / -6°4811.18.36.80.0
Feb-1° / -7°439.58.38.90.0
Mar / -4°409.75.811.40.1
Apr10° / 42102142.3
May16° / 469.50.116.45.2
Jun20° / 10°8312.4017.85.9
Jul22° / 13°8312.3017.36.4
Aug21° / 12°8612.8015.16.0
Sep16° / 5610.7012.54.7
Oct / 6211.70.79.91.9
Nov / 5210.63.57.50.1
Dec / -3°5211.37.26.20.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% 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 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24654
34654
44654
54753
64555
74555
84555
94456
104456
114456
124555
134456
144357
154357
164258
174258
184258
194159
204060
214060
223961
233961
243862
253862
263664
273664
283565
293565
303565
313466

Chance of precipitation in August

Any precipitation

Pärnu gets around 86 mm of rain over 12.8 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 42% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
338
439
539
639
739
840
940
1040
1141
1241
1342
1442
1543
1643
1743
1843
1944
2044
2144
2244
2344
2444
2543
2643
2743
2842
2942
3042
3142

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 49% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13544183
23644173
33644173
43744163
53844162
63844152
73944152
84044142
94144142
104144132
114244131
124343121
134443121
144542111
154642111
164841101
17494191
18504091
19523981
20523981
21543871
22553771
23563671
24583561
25593461
26613351
27633250
28653140
29663040
30672940
31692830

Wind in August

Winds average 12 km/h in August.

Across August, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 h 18 min at the start of August to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 144 minutes over August. Sunrise moves from 4:19 AM to 5:25 AM, and sunset from 8:37 PM to 7:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.34:198:37
216.24:218:35
316.24:238:33
416.14:258:31
516.04:278:28
615.94:298:26
715.94:328:24
815.84:348:21
915.74:368:19
1015.64:388:16
1115.64:408:14
1215.54:438:11
1315.44:458:08
1415.34:478:06
1515.24:498:03
1615.24:528:01
1715.14:547:58
1815.04:567:55
1914.94:587:53
2014.85:017:50
2114.75:037:47
2214.75:057:44
2314.65:077:42
2414.55:107:39
2514.45:127:36
2614.35:147:33
2714.25:167:30
2814.15:197:27
2914.15:217:25
3014.05:237:22
3113.95:257:19

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.23 kWh/m².

For context, solar energy here swings from a low near 0.23 kWh/m² to a high of 5.72 kWh/m² in June across the year — August's 4.23 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.8Bright
54.8Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.4Bright
134.4Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.1Bright
194.0Bright
204.0Moderate
213.9Moderate
223.9Moderate
233.8Moderate
243.8Moderate
253.7Moderate
263.7Moderate
273.6Moderate
283.5Moderate
293.5Moderate
303.4Moderate
313.4Moderate
Planning a trip in August

Is August a good time to visit Pärnu?

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

6.0
Sightseeing
2nd-best month of the year
3.7
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Pärnu for sightseeing.

What to pack for Pärnu in August

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

In August, Pärnu sees daytime highs around 21°C and nights near 12°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Pärnu in August

The nearest coast averages about 19°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 19°C and coldest in February near 0°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
Feb0Bracing
Mar1Bracing
Apr3Bracing
May9Bracing
Jun14Bracing
Jul18Cool
Aug19Cool
Sep15Cool
Oct11Bracing
Nov7Bracing
Dec4Bracing

UV index in Pärnu 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 Pärnu peaks around June 19 at about 6 (high) — 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 5 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 19UV 6Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun6High
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Pärnu?

Pärnu sits at 58.4°N, 24.5°E, 6 m above sea level, in Estonia. The nearest listed city is Viljandi, 64 km away.

ViljandiMuhuHaapsaluRuhnuValmieraNõmmeValgaMustamäe

Topography around Pärnu

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

Within 3 km, the terrain around Pärnu has only modest variations in elevation — a maximum elevation change of 35 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 54 m; within 80 km, only modest variations in elevation — a maximum elevation change of 164 m.

The land around Pärnu is covered by water (28%), artificial surfaces (25%) and trees (24%) within 3 km, trees (33%) and water (27%) within 16 km, and trees (48%) and water (24%) within 80 km.

3 km
35 m
16 km
54 m
80 km
164 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Viljandi 64 km · Muhu 77 km · Haapsalu 83 km · Ruhnu 98 km · Valmiera 109 km · Nõmme 111 km · Valga 113 km · Mustamäe 114 km

Estonia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 66% of US
price level, 2025
GDP per capita
$34,418
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
1.5
per 100k, 2023
Road deaths
4.5
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 561
Religion
none 58%Orthodox 17%Protestant 9%other 3%

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 Pärnu (58.3859°, 24.4971°, elevation 6 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).