Kostomuksha weather in August

In August, Kostomuksha sees average daytime highs of 17°C and overnight lows near 9°C, with 76 mm of rain across 12.7 wet days and about 16.2 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 15°C by the end. The sky is clear or mostly clear about 11% of the time in August, and the air most often feels dry.

Daylight stretches from about 17 h 48 min at the start of August to 14 h 30 min by month's end. Set against the rest of the year, August is Kostomuksha's 6th-clearest and 11th-windiest month. For the whole year in context, see Kostomuksha's year-round climate.

Daytime high
17°
2nd warmest
Overnight low
11th coldest
Rainfall
76 mm
12.7 wet days
Daylight
16 h 12 min
4:57 AM – 9:07 PM
Cloud cover
76%
6th clearest
Wind
11 km/h
11th windiest
Solar energy
3.25 kWh/m²
Travel score
5.0
out of 10

Kostomuksha is human settlement in Kostomuksha Municipal Okrug, Republic of Karelia, Russia.

Density
2,009/km²
people per km²
Founded
1977

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 19°C in the first days to 15°C by the end.

A typical August day in Kostomuksha reaches about 17°C in the afternoon and slips back to 9°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 22°C. Set against its neighbours, August runs about 2°C cooler than July and about 6°C warmer than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12011
21911
31911
41911
51911
61911
71911
81810
91810
101810
111810
121810
131810
141810
151710
16179
17179
18179
19179
20179
21179
22169
23169
24168
25168
26168
27168
28158
29158
30158
31157

How August really feels in Kostomuksha

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.

Kostomuksha 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-8° / -13°32910.94.70.0
Feb-7° / -13°267.89.77.80.0
Mar-2° / -9°318.41011.20.0
Apr / -4°338.4614.60.3
May12° / 5811.32.6182.8
Jun17° / 6912.20.220.54.9
Jul20° / 11°8113.4019.45.5
Aug17° / 7612.7016.25.0
Sep12° / 6411.50.312.72.7
Oct / -0°5711.75.19.30.2
Nov-1° / -5°4710.910.15.90.0
Dec-5° / -10°421112.43.50.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 13% of August, with mostly cloudy or overcast conditions the remaining 77%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22674
32674
42575
52575
62476
72476
82377
92377
102377
112377
122377
132377
142278
152377
162377
172377
182278
192377
202377
212377
222377
232377
242377
252377
262377
272377
282278
292278
302278
312278

Chance of precipitation in August

Any precipitation

Kostomuksha gets around 76 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 40% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
240
340
441
541
642
742
843
943
1043
1143
1243
1343
1442
1542
1641
1741
1840
1940
2040
2139
2239
2338
2438
2537
2637
2737
2837
2937
3037
3137

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 86% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1722161
2742051
3742051
4751951
5771841
6771841
7781741
8801640
9811630
10821530
11821530
12831430
13841420
14851320
15861220
16861220
17881110
18881110
19891010
20891010
2190910
2291900
2392800
2492800
2592800
2693700
2793700
2894600
2994600
3095500
3195500

Wind in August

Winds average 11 km/h in August.

Across August, daily wind ranges from about 10 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
110calm
210calm
310calm
410calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3112calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 17 h 48 min at the start of August to 14 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 198 minutes over August. Sunrise moves from 4:08 AM to 5:44 AM, and sunset from 9:59 PM to 8:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
117.84:089:59
217.74:129:56
317.64:159:52
417.54:189:49
517.44:219:46
617.34:259:42
717.24:289:39
817.14:319:35
917.04:349:32
1016.84:379:28
1116.74:419:25
1216.64:449:21
1316.54:479:18
1416.44:509:14
1516.34:549:10
1616.24:579:07
1716.15:009:03
1815.95:039:00
1915.85:068:56
2015.75:098:52
2115.65:138:49
2215.55:168:45
2315.45:198:41
2415.35:228:38
2515.15:258:34
2615.05:288:30
2714.95:318:27
2814.85:358:23
2914.75:388:19
3014.65:418:15
3114.55:448:12

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.25 kWh/m².

For context, solar energy here swings from a low near 0.03 kWh/m² to a high of 5.04 kWh/m² in June across the year — August's 3.25 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.0Bright
34.0Moderate
43.9Moderate
53.8Moderate
63.8Moderate
73.7Moderate
83.6Moderate
93.6Moderate
103.5Moderate
113.5Moderate
123.4Moderate
133.4Moderate
143.3Moderate
153.3Moderate
163.2Moderate
173.2Moderate
183.1Moderate
193.1Moderate
203.0Moderate
213.0Moderate
223.0Moderate
232.9Moderate
242.9Moderate
252.8Moderate
262.8Moderate
272.7Moderate
282.7Moderate
292.6Moderate
302.6Moderate
312.5Moderate
Planning a trip in August

Is August a good time to visit Kostomuksha?

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

5.0
Sightseeing
2nd-best month of the year
1.4
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Kostomuksha for sightseeing.

What to pack for Kostomuksha in August

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

In August, Kostomuksha sees daytime highs around 17°C and nights near 9°C. Worth packing: rain gear. About 13 days see rain.

rain gear

UV index in Kostomuksha 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 Kostomuksha peaks around July 15 at about 5 (moderate) — 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 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJul 15UV 5Dec 17UV 0
UV index (midday)Level
Jan0Low
Feb0Low
Mar1Low
Apr2Moderate
May4Moderate
Jun4Moderate
Jul5Moderate
Aug4Moderate
Sep2Low
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Kostomuksha?

Kostomuksha sits at 64.6°N, 30.6°E, 212 m above sea level, in Russia. The nearest listed city is Kajaani, 142 km away.

Topography around Kostomuksha

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

Within 3 km, the terrain around Kostomuksha has only modest variations in elevation — a maximum elevation change of 75 m around an average of 207 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 313 m; within 80 km, significant variations in elevation — a maximum elevation change of 312 m.

The land around Kostomuksha is covered by trees (69%) within 3 km, trees (76%) within 16 km, and trees (77%) within 80 km.

3 km
75 m
16 km
313 m
80 km
312 m
treesgrasslandartificial surfacesbare terrainwaterwetland
August weather nearby: Kajaani 142 km · Iisalmi 199 km · Segezha 203 km · Kontiolahti 205 km · Siilinjärvi 218 km · Joensuu 223 km · Kuopio 235 km · Oulu 247 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 Kostomuksha (64.571°, 30.5767°, elevation 212 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).