Viljandi weather in August

In August, Viljandi sees average daytime highs of 21°C and overnight lows near 12°C, with 90 mm of rain across 13.3 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 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 20% 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 Viljandi's 4th-clearest and 11th-windiest month. For the whole year in context, see Viljandi's year-round climate.

Daytime high
21°
2nd warmest
Overnight low
12°
11th coldest
Rainfall
90 mm
13.3 wet days
Daylight
15 h 06 min
4:47 AM – 7:56 PM
Cloud cover
65%
4th clearest
Wind
12 km/h
11th windiest
Solar energy
4.05 kWh/m²
Travel score
5.9
out of 10

Viljandi is town in southern Estonia.

Density
1,187/km²
people per km²
Founded
1263

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 22°C in the first days to 19°C by the end.

A typical August day in Viljandi 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 16°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)
12213
22213
32213
42213
52213
62213
72213
82213
92213
102112
112112
122112
132112
142112
152112
162112
172112
182012
192012
202012
212011
222011
232011
242011
251911
261911
271911
281911
291911
301910
311810

How August really feels in Viljandi

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.

Viljandi 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-2° / -6°4711.19.36.80.0
Feb-2° / -7°419.488.90.0
Mar / -4°399.66.311.40.0
Apr10° / 439.82.2142.2
May16° / 5310.60.116.44.9
Jun19° / 10°9012.7017.85.7
Jul22° / 13°8112.4017.26.2
Aug21° / 12°9013.3015.15.9
Sep16° / 5711.2012.54.5
Oct / 6611.90.99.91.6
Nov / -1°5311.24.47.50.0
Dec-0° / -4°5011.58.46.20.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 18% of August, with mostly cloudy or overcast conditions the remaining 61%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24456
34456
44456
54456
64258
74258
84258
94159
104060
114159
124060
133961
143961
153961
163961
173961
183862
193763
203763
213763
223763
233664
243664
253565
263565
273466
283466
293367
303268
313268

Chance of precipitation in August

Any precipitation

Viljandi gets around 90 mm of rain over 13.3 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 43% and peaks near 45% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
139
239
339
440
540
641
741
841
942
1042
1142
1243
1343
1444
1544
1645
1745
1845
1945
2045
2145
2245
2345
2445
2544
2644
2744
2843
2943
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 53% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13642184
23742183
33742173
43842173
53942163
64042152
74142142
84242142
94342132
104441132
114641122
124740122
134839111
145039101
155138101
16533791
17543691
18553681
19563581
20583471
21593371
22613261
23623161
24643051
25643051
26652951
27682840
28692740
29712630
30732430
31742330

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 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3113light breeze

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 4:14 AM to 5:21 AM, and sunset from 8:33 PM to 7:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.34:148:33
216.24:178:31
316.24:198:28
416.14:218:26
516.04:238:24
615.94:258:21
715.94:278:19
815.84:308:17
915.74:328:14
1015.64:348:12
1115.54:368:09
1215.54:388:07
1315.44:418:04
1415.34:438:01
1515.24:457:59
1615.14:477:56
1715.14:507:53
1815.04:527:51
1914.94:547:48
2014.84:567:45
2114.74:597:43
2214.75:017:40
2314.65:037:37
2414.55:057:34
2514.45:087:31
2614.35:107:29
2714.25:127:26
2814.15:147:23
2914.15:177:20
3014.05:197:17
3113.95:217:14

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.05 kWh/m².

For context, solar energy here swings from a low near 0.23 kWh/m² to a high of 5.46 kWh/m² in June across the year — August's 4.05 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.7Bright
34.7Bright
44.6Bright
54.6Bright
64.5Bright
74.5Bright
84.5Bright
94.4Bright
104.3Bright
114.3Bright
124.3Bright
134.2Bright
144.1Bright
154.1Bright
164.0Bright
174.0Moderate
183.9Moderate
193.9Moderate
203.8Moderate
213.8Moderate
223.7Moderate
233.7Moderate
243.6Moderate
253.6Moderate
263.5Moderate
273.5Moderate
283.4Moderate
293.4Moderate
303.3Moderate
313.2Moderate
Planning a trip in August

Is August a good time to visit Viljandi?

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

5.9
Sightseeing
2nd-best month of the year
3.3
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Viljandi for sightseeing.

What to pack for Viljandi in August

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

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

rain gear

UV index in Viljandi 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 Viljandi peaks around June 20 at about 6 (high) — a little sun protection helps at midday. It bottoms out near December 17 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 20UV 6Dec 17UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun6High
Jul5High
Aug5Moderate
Sep3Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Viljandi?

Viljandi sits at 58.4°N, 25.6°E, 84 m above sea level, in Estonia. The nearest listed city is Otepää, 63 km away.

OtepääPärnuTartuValgaValmieraRakvereNõmme

Topography around Viljandi

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

Within 3 km, the terrain around Viljandi has only modest variations in elevation — a maximum elevation change of 67 m around an average of 74 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 119 m; within 80 km, only modest variations in elevation — a maximum elevation change of 222 m.

The land around Viljandi is covered by trees (33%), grassland (26%) and cropland (21%) within 3 km, trees (56%) and cropland (26%) within 16 km, and trees (60%) within 80 km.

3 km
67 m
16 km
119 m
80 km
222 m
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Otepää 63 km · Pärnu 64 km · Tartu 66 km · Valga 70 km · Valmiera 92 km · Rakvere 118 km · Cēsis 118 km · Nõmme 124 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 Viljandi (58.3632°, 25.5916°, elevation 84 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. 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).