Ostashkov weather in August

In August, Ostashkov sees average daytime highs of 20°C and overnight lows near 12°C, with 85 mm of rain across 12.7 wet days and about 15 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 18°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 06 min at the start of August to 13 h 48 min by month's end. Set against the rest of the year, August is Ostashkov's 4th-clearest and 10th-windiest month. For the whole year in context, see Ostashkov's year-round climate.

Daytime high
20°
2nd warmest
Overnight low
12°
11th coldest
Rainfall
85 mm
12.7 wet days
Daylight
15 hours
5:22 AM – 8:22 PM
Cloud cover
67%
4th clearest
Wind
12 km/h
10th windiest
Solar energy
3.89 kWh/m²
Travel score
5.8
out of 10

Ostashkov is human settlement in Ostashkovsky District, Tver Oblast, Russia.

Density
1,505/km²
people per km²
Founded
1301

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 18°C by the end.

A typical August day in Ostashkov reaches about 20°C in the afternoon and slips back to 12°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 25°C. Set against its neighbours, August runs about 2°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
42214
52114
62113
72113
82113
92113
102113
112113
122113
132013
142013
152012
162012
172012
182012
192012
202012
211912
221912
231911
241911
251911
261911
271811
281811
291811
301810
311810

How August really feels in Ostashkov

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.

Ostashkov 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-4° / -9°4511.713.47.10.0
Feb-4° / -9°349.511.190.0
Mar / -5°379.68.611.40.0
Apr / 399.22.513.91.7
May16° / 6812.50.216.24.6
Jun19° / 12°8513.6017.55.5
Jul22° / 14°9214.10175.9
Aug20° / 12°8512.70155.8
Sep14° / 6311.60.112.53.9
Oct / 6912.82.5101.0
Nov / -3°5211.77.67.80.0
Dec-3° / -7°4711.811.96.50.0

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 17% of August, with mostly cloudy or overcast conditions the remaining 64%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24258
34258
44258
54258
64159
74060
84060
94060
104060
113961
123961
133862
143862
153763
163664
173565
183565
193466
203565
213466
223367
233367
243367
253367
263367
273268
283268
293169
303070
312971

Chance of precipitation in August

Any precipitation

Ostashkov gets around 85 mm of rain over 12.7 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 41% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
237
337
437
537
638
738
839
939
1040
1140
1241
1341
1442
1543
1643
1744
1844
1944
2044
2144
2244
2344
2443
2543
2643
2742
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 54% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13636262
23736262
33836252
44036241
54136221
64236211
74436201
84536181
94636171
104736161
114836151
124936141
134936131
145136121
155236111
165336101
17543691
18553591
19563581
20583471
21593371
22613261
23623161
24643051
25652951
26672841
27692641
28722530
29742330
30752230
31772120

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
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 h 06 min at the start of August to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 138 minutes over August. Sunrise moves from 4:51 AM to 5:54 AM, and sunset from 8:56 PM to 7:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.14:518:56
216.04:538:54
316.04:558:52
415.94:578:50
515.84:598:48
615.75:018:45
715.75:038:43
815.65:058:41
915.55:078:39
1015.45:098:36
1115.45:118:34
1215.35:138:31
1315.25:168:29
1415.15:188:27
1515.15:208:24
1615.05:228:22
1714.95:248:19
1814.85:268:16
1914.85:288:14
2014.75:308:11
2114.65:328:09
2214.55:358:06
2314.45:378:03
2414.45:398:01
2514.35:417:58
2614.25:437:55
2714.15:457:53
2814.05:477:50
2914.05:497:47
3013.95:517:44
3113.85:547:42

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.89 kWh/m².

For context, solar energy here swings from a low near 0.27 kWh/m² to a high of 5.23 kWh/m² in June across the year — August's 3.89 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.5Bright
34.5Bright
44.5Bright
54.4Bright
64.4Bright
74.3Bright
84.3Bright
94.2Bright
104.2Bright
114.1Bright
124.1Bright
134.0Bright
144.0Moderate
153.9Moderate
163.9Moderate
173.8Moderate
183.8Moderate
193.7Moderate
203.7Moderate
213.6Moderate
223.6Moderate
233.5Moderate
243.5Moderate
253.4Moderate
263.4Moderate
273.3Moderate
283.3Moderate
293.2Moderate
303.2Moderate
313.1Moderate
Planning a trip in August

Is August a good time to visit Ostashkov?

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

5.8
Sightseeing
2nd-best month of the year
3.0
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Ostashkov for sightseeing.

What to pack for Ostashkov in August

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

In August, Ostashkov sees daytime highs around 20°C and nights near 12°C. Worth packing: rain gear. About 13 days see rain.

rain gear

UV index in Ostashkov 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 Ostashkov peaks around July 11 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. 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 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 11UV 6Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May4Moderate
Jun6High
Jul6High
Aug4Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low
Location & terrain

Where is Ostashkov?

Ostashkov sits at 57.1°N, 33.1°E, 210 m above sea level, in Russia. The nearest listed city is Valday, 93 km away.

Topography around Ostashkov

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

Within 3 km, the terrain around Ostashkov has only modest variations in elevation — a maximum elevation change of 23 m around an average of 208 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 87 m; within 80 km, significant variations in elevation — a maximum elevation change of 335 m.

The land around Ostashkov is covered by water (44%) and trees (26%) within 3 km, trees (64%) within 16 km, and trees (85%) within 80 km.

3 km
23 m
16 km
87 m
80 km
335 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Valday 93 km · Bologoye 100 km · Vyshniy Volochëk 100 km · Nelidovo 104 km · Torzhok 113 km · Rzhev 123 km · Udomlya 139 km · Staraya Russa 141 km

Russia travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 32% of US
price level, 2025
GDP per capita
$17,547
2025
Happiness
5.8 / 10
World Happiness, 2025
Safe drinking water
76%
of population, 2024
Homicide rate
6.8
per 100k, 2021
Road deaths
12
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 521
Religion
other Christian 2%

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 Ostashkov (57.1469°, 33.1066°, elevation 210 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).