Imatra weather in May

In May, Imatra sees average daytime highs of 14°C and overnight lows near 5°C, with 48 mm of precipitation across 9 wet days and about 17 hours of daylight. It is the 4th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 12°C in the first days to 17°C by the end. The sky is clear or mostly clear about 27% of the time in May, and the air most often feels dry.

Daylight stretches from about 15 h 42 min at the start of May to 18 h 12 min by month's end. Set against the rest of the year, May is Imatra's 1st-clearest and 9th-windiest month. For the whole year in context, see Imatra's year-round climate.

Daytime high
14°
4th warmest
Overnight low
8th coldest
Precipitation
48 mm
9 wet days
Daylight
17 h 06 min
3:29 AM – 8:33 PM
Cloud cover
62%
1st clearest
Wind
12 km/h
9th windiest
Solar energy
5.2 kWh/m²
Travel score
4.3
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 May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 12°C in the first days to 17°C by the end.

A typical May day in Imatra reaches about 14°C in the afternoon and slips back to 5°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 21°C. Set against its neighbours, May runs about 7°C warmer than April and about 5°C cooler than June.

10°20°151015202531
Avg high (°C)Avg low (°C)
1112
2123
3123
4123
5123
6123
7133
8134
9134
10134
11134
12144
13145
14145
15145
16145
17155
18156
19156
20156
21156
22156
23167
24167
25167
26167
27167
28168
29178
30178
31178

How May really feels in Imatra

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 5 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
5
wind chill below the day's low

The story in May is cold — wind chill drags the overnight "feels like" below the raw low.

Imatra weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 8th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
34159
44159
54159
64159
74159
84258
94258
104357
114456
124456
134357
144357
154357
164456
174456
184456
194456
204456
214456
224456
234357
244357
254357
264357
274357
284258
294258
304357
314357

Chance of precipitation in May

Any precipitationSnow

Imatra gets around 48 mm of rain and snow over 9 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 29% and peaks near 33% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1264
2264
3264
4263
5263
6263
7263
8262
9262
10262
11272
12271
13271
14281
15281
16291
17291
18301
19301
20311
21310
22320
23320
24320
25320
26330
27330
28330
29330
30330
31330

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
110000
210000
310000
410000
510000
610000
710000
810000
910000
1010000
1110000
1210000
1310000
149910
159910
169910
179910
189910
199820
209820
219820
229820
239820
249730
259730
269730
279730
289730
299640
309640
319541

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 12 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
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 15 h 42 min at the start of May to 18 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 150 minutes over May. Sunrise moves from 4:10 AM to 2:57 AM, and sunset from 7:54 PM to 9:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.74:107:54
215.84:077:57
315.94:048:00
416.04:018:02
516.13:598:05
616.23:568:08
716.33:538:10
816.43:508:13
916.53:478:15
1016.63:458:18
1116.63:428:21
1216.73:398:23
1316.83:378:26
1416.93:348:28
1517.03:328:31
1617.13:298:33
1717.23:278:36
1817.23:248:38
1917.33:228:41
2017.43:208:43
2117.53:178:46
2217.53:158:48
2317.63:138:50
2417.73:118:53
2517.83:098:55
2617.83:078:57
2717.93:058:59
2818.03:039:01
2918.03:019:04
3018.12:599:06
3118.22:579:08

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.2 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 — May's 5.2 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.7Bright
34.7Bright
44.8Bright
54.8Bright
64.8Bright
74.9Bright
85.0Bright
95.0Bright
105.0Bright
115.1Bright
125.1Bright
135.2Bright
145.2Bright
155.2Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in May

Is May a good time to visit Imatra?

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

4.3
Sightseeing
4th-best month of the year
0.3
Beach & pool
5th-best month of the year

May is a reasonable time to visit Imatra for sightseeing.

What to pack for Imatra in May

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

In May, Imatra sees daytime highs around 14°C and nights near 5°C. Worth packing: a warm layer, rain gear and sun protection. About 9 days see rain.

a warm layerrain gearsun protection

Sea temperature near Imatra in May

The nearest coast averages about 7°C in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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
May 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).