Imatra weather in August

In August, Imatra sees average daytime highs of 20°C and overnight lows near 12°C, with 73 mm of rain across 12.1 wet days and about 15.5 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 18°C by the end. The sky is clear or mostly clear about 17% of the time in August, and the air most often feels dry.

Daylight stretches from about 16 h 54 min at the start of August to 14 h 06 min by month's end. Set against the rest of the year, August is Imatra's 4th-clearest and 11th-windiest month. For the whole year in context, see Imatra's year-round climate.

Daytime high
20°
2nd warmest
Overnight low
12°
11th coldest
Rainfall
73 mm
12.1 wet days
Daylight
15 h 36 min
4:23 AM – 7:56 PM
Cloud cover
68%
4th clearest
Wind
11 km/h
11th windiest
Solar energy
3.91 kWh/m²
Travel score
5.8
out of 10

Imatra is urban settlement in South Karelia, Finland.

Air quality
Excellent
PM10 9.8 µg/m³ · 2019
Density
435/km²
people per km²

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 21°C in the first days to 18°C by the end.

A typical August day in Imatra 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 24°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)
12214
22214
32113
42113
52113
62113
72113
82113
92113
102113
112013
122013
132012
142012
152012
162012
172012
181912
191912
201912
211912
221911
231911
241911
251811
261811
271811
281811
291811
301710
311710

How August really feels in Imatra

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.

Imatra 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-5° / -9°4110.9126.10.0
Feb-4° / -10°368.99.68.50.0
Mar / -6°358.98.411.30.0
Apr / -1°338.43.614.31.1
May14° / 4890.4174.3
Jun19° / 11°6612018.75.6
Jul21° / 13°7612.40186.1
Aug20° / 12°7312.1015.55.8
Sep14° / 5511.1012.63.9
Oct / 5611.21.79.60.9
Nov / -2°5211.36.56.90.0
Dec-2° / -6°5011.910.85.20.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% 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 66%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24159
34159
44060
53961
63961
73763
83664
93664
103664
113664
123466
133466
143466
153565
163466
173367
183367
193367
203367
213268
223169
233169
243169
253169
263169
273169
283169
293070
303070
313070

Chance of precipitation in August

Any precipitation

Imatra gets around 73 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 40% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
237
337
437
538
638
738
838
939
1039
1139
1239
1340
1440
1540
1640
1740
1840
1940
2040
2140
2240
2340
2439
2539
2638
2738
2838
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 62% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14737152
24837142
34937132
45037121
55137111
65237101
7543691
8543691
9553681
10553681
11573670
12583570
13593560
14603460
15613450
16623350
17633340
18643240
19653230
20663130
21663130
22683020
23683020
24692920
25702820
26722710
27732610
28742510
29762310
30772210
31782110

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
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 h 54 min at the start of August to 14 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 168 minutes over August. Sunrise moves from 3:44 AM to 5:01 AM, and sunset from 8:38 PM to 7:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.93:448:38
216.83:478:35
316.73:498:33
416.63:528:30
516.63:548:27
616.53:578:25
716.43:598:22
816.34:028:19
916.24:048:16
1016.14:078:13
1116.04:108:10
1215.94:128:07
1315.84:158:05
1415.74:178:02
1515.64:207:59
1615.64:237:56
1715.54:257:53
1815.44:287:50
1915.34:307:46
2015.24:337:43
2115.14:367:40
2215.04:387:37
2314.94:417:34
2414.84:437:31
2514.74:467:28
2614.64:497:25
2714.54:517:21
2814.44:547:18
2914.34:567:15
3014.24:597:12
3114.15:017:09

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.91 kWh/m².

For context, solar energy here swings from a low near 0.11 kWh/m² to a high of 5.48 kWh/m² in June across the year — August's 3.91 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.2Bright
114.2Bright
124.1Bright
134.1Bright
144.0Bright
154.0Moderate
163.9Moderate
173.9Moderate
183.8Moderate
193.8Moderate
203.7Moderate
213.6Moderate
223.6Moderate
233.5Moderate
243.5Moderate
253.4Moderate
263.4Moderate
273.3Moderate
283.3Moderate
293.2Moderate
303.1Moderate
313.1Moderate
Planning a trip in August

Is August a good time to visit Imatra?

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
2.8
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Imatra for sightseeing.

What to pack for Imatra in August

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

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

rain gear

Sea temperature near Imatra in August

The nearest coast averages about 18°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 64 km away) is warmest in August at about 18°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
Jan1Bracing
Feb0Bracing
Mar0Bracing
Apr1Bracing
May7Bracing
Jun13Bracing
Jul17Cool
Aug18Cool
Sep15Bracing
Oct10Bracing
Nov6Bracing
Dec3Bracing

UV index in Imatra 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 Imatra peaks around June 23 at about 5 (moderate) — 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 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJun 23UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr2Moderate
May4Moderate
Jun5Moderate
Jul5Moderate
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Imatra?

Imatra sits at 61.2°N, 28.8°E, 68 m above sea level, in Finland. The nearest listed city is Svetogorsk, 9.0 km away.

PriozërskSavonlinnaMikkeliHaminaKouvola

Topography around Imatra

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

Within 3 km, the terrain around Imatra has only modest variations in elevation — a maximum elevation change of 75 m around an average of 71 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 136 m; within 80 km, only modest variations in elevation — a maximum elevation change of 245 m.

The land around Imatra is covered by trees (65%) within 3 km, trees (62%) and water (24%) within 16 km, and trees (73%) and water (21%) within 80 km.

3 km
75 m
16 km
136 m
80 km
245 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Svetogorsk 9.0 km · Lappeenranta 33 km · Vyborg 52 km · Priozërsk 76 km · Savonlinna 78 km · Mikkeli 97 km · Hamina 108 km · Kouvola 116 km

Finland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 85% of US
price level, 2025
GDP per capita
$56,149
2025
Happiness
7.8 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1
per 100k, 2023
Road deaths
3.9
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 603
Religion
Lutheran 67%none 31%other 2%Greek Orthodox 1%

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 Imatra (61.1718°, 28.7524°, elevation 68 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).