Kostroma weather in August

In August, Kostroma sees average daytime highs of 21°C and overnight lows near 12°C, with 70 mm of rain across 12.1 wet days and about 15.1 hours of daylight. It is the 2nd-warmest and 3rd-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 20% of the time in August, and the air most often feels dry.

Daylight stretches from about 16 h 12 min at the start of August to 13 h 48 min by month's end. Set against the rest of the year, August is Kostroma's 3rd-clearest and 11th-windiest month. For the whole year in context, see Kostroma's year-round climate.

Daytime high
21°
2nd warmest
Overnight low
12°
11th coldest
Rainfall
70 mm
12.1 wet days
Daylight
15 h 06 min
4:48 AM – 7:53 PM
Cloud cover
65%
3rd clearest
Wind
11 km/h
11th windiest
Solar energy
4.04 kWh/m²
Travel score
6.1
out of 10

Kostroma is city in the center of European Russia.

Density
1,919/km²
people per km²
Founded
1152

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 Kostroma 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 15°C and 27°C. Set against its neighbours, August runs about 2°C cooler than July and about 6°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12313
22313
32313
42313
52313
62213
72213
82213
92212
102212
112212
122212
132112
142112
152112
162112
172111
182111
192111
202011
212011
222011
232011
242011
251910
261910
271910
281910
291910
301810
311810

How August really feels in Kostroma

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.

Kostroma weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-6° / -12°4111.112.570.0
Feb-5° / -11°318.6108.90.0
Mar / -7°359.28.611.40.0
Apr10° / 409.22.7142.0
May17° / 5811.10.316.35.2
Jun21° / 11°7511.8017.66.1
Jul23° / 14°7312.5017.16.4
Aug21° / 12°7012.1015.16.1
Sep15° / 6511.10.212.54.2
Oct / 6512.13.3101.0
Nov-0° / -4°5010.87.77.60.0
Dec-5° / -9°4210.411.56.30.0

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 19% 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 (%)
14555
24555
34555
44555
54555
64456
74456
84555
94456
104456
114357
124357
134258
144159
154159
164258
174060
184060
194060
203862
213862
223763
233664
243664
253466
263466
273367
283268
293070
303070
312773

Chance of precipitation in August

Any precipitation

Kostroma gets around 70 mm of rain over 12.1 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 39% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
237
337
437
537
637
738
838
939
1039
1139
1240
1340
1440
1540
1641
1741
1841
1941
2040
2140
2240
2339
2439
2539
2638
2738
2838
2938
3038
3138

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 59% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14231225
24331215
34430215
44630204
54730194
64830184
75030173
85131153
95231143
105331133
115432122
125532112
135532112
145632102
155731102
16583192
17593182
18603082
19603082
20622972
21632872
22662761
23672661
24682561
25692461
26712261
27732151
28742051
29761851
30781750
31791650

Wind in August

Winds average 11 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
1111calm
1211calm
1311calm
1411calm
1511calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 h 12 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 144 minutes over August. Sunrise moves from 4:16 AM to 5:21 AM, and sunset from 8:28 PM to 7:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.24:168:28
216.14:188:26
316.14:218:24
416.04:238:22
515.94:258:19
615.84:278:17
715.84:298:15
815.74:318:12
915.64:338:10
1015.54:358:08
1115.54:378:05
1215.44:408:03
1315.34:428:00
1415.24:447:58
1515.24:467:55
1615.14:487:53
1715.04:507:50
1814.94:537:47
1914.84:557:45
2014.84:577:42
2114.74:597:39
2214.65:017:37
2314.55:047:34
2414.45:067:31
2514.35:087:28
2614.35:107:26
2714.25:127:23
2814.15:147:20
2914.05:177:17
3013.95:197:14
3113.85:217:12

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.04 kWh/m².

For context, solar energy here swings from a low near 0.26 kWh/m² to a high of 5.52 kWh/m² in June across the year — August's 4.04 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.7Bright
44.7Bright
54.6Bright
64.6Bright
74.5Bright
84.5Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.2Bright
144.2Bright
154.1Bright
164.0Bright
174.0Moderate
183.9Moderate
193.9Moderate
203.8Moderate
213.8Moderate
223.7Moderate
233.7Moderate
243.6Moderate
253.5Moderate
263.5Moderate
273.4Moderate
283.4Moderate
293.3Moderate
303.2Moderate
313.2Moderate
Planning a trip in August

Is August a good time to visit Kostroma?

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
3.6
Beach & pool
3rd-best month of the year

August is a reasonable time to visit Kostroma for sightseeing.

What to pack for Kostroma in August

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

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

rain gear

UV index in Kostroma 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 Kostroma peaks around July 13 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 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 13UV 6Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May4Moderate
Jun5High
Jul6High
Aug4Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low
Location & terrain

Where is Kostroma?

Kostroma sits at 57.8°N, 40.9°E, 109 m above sea level, in Russia. The nearest listed city is Volgorechensk, 38 km away.

Topography around Kostroma

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

Within 3 km, the terrain around Kostroma has only modest variations in elevation — a maximum elevation change of 80 m around an average of 102 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 116 m; within 80 km, only modest variations in elevation — a maximum elevation change of 167 m.

The land around Kostroma is covered by artificial surfaces (47%) and trees (31%) within 3 km, trees (41%), grassland (27%) and cropland (20%) within 16 km, and trees (66%) and grassland (21%) within 80 km.

3 km
80 m
16 km
116 m
80 km
167 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Volgorechensk 38 km · Nerekhta 40 km · Privolzhsk 48 km · Furmanov 58 km · Yaroslavl 64 km · Danilov 65 km · Kineshma 80 km · Gavrilov-Yam 82 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 Kostroma (57.7664°, 40.9283°, elevation 109 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).