Kotka weather in October

In October, Kotka sees average daytime highs of 8°C and overnight lows near 4°C, with 64 mm of precipitation across 11.6 wet days and about 9.7 hours of daylight. It is the 6th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 11°C in the first days to 5°C by the end. The sky is clear or mostly clear about 13% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 06 min at the start of October to 8 h 18 min by month's end. Set against the rest of the year, October is Kotka's 8th-clearest and 4th-windiest month. For the whole year in context, see Kotka's year-round climate.

Daytime high
6th warmest
Overnight low
7th coldest
Precipitation
64 mm
11.6 wet days
Daylight
9 h 42 min
7:06 AM – 4:49 PM
Cloud cover
77%
8th clearest
Wind
16 km/h
4th windiest
Solar energy
1.04 kWh/m²
Travel score
1.3
out of 10

Kotka is urban area in Kotka, Finland.

Air quality
Good
PM10 18.7 µg/m³ · 2019

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 11°C in the first days to 5°C by the end.

A typical October day in Kotka reaches about 8°C in the afternoon and slips back to 4°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 12°C. Set against its neighbours, October runs about 7°C cooler than September and about 5°C warmer than November.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
1117
2116
3116
4116
5116
6106
7106
8105
9105
1095
1195
1295
1394
1484
1584
1684
1784
1873
1973
2073
2173
2273
2363
2462
2562
2662
2762
2862
2952
3052
3152

How October really feels in Kotka

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 15 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
15
wind chill below the day's low

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

Kotka weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -7°4710.910.96.30.0
Feb-3° / -8°429.29.28.60.0
Mar / -5°3797.211.30.0
Apr / 358.82.614.20.9
May13° / 439.50.116.93.7
Jun17° / 10°6411.1018.55.3
Jul21° / 14°5810.1017.86.4
Aug20° / 13°6611.6015.45.9
Sep15° / 5810.2012.64.2
Oct / 6411.619.71.3
Nov / -0°61125.17.10.0
Dec-0° / -4°5912.395.50.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 10% of October, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12971
22971
32971
42872
52872
62773
72773
82773
92674
102674
112674
122575
132674
142674
152476
162476
172476
182377
192377
202377
212278
222179
232179
242179
252179
262080
271981
281981
291981
301981
311882

Chance of precipitation in October

Any precipitationSnow

Kotka gets around 64 mm of rain and snow over 11.6 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 38% and peaks near 39% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1340
2340
3350
4361
5361
6371
7371
8372
9382
10382
11382
12382
13382
14383
15383
16383
17383
18383
19384
20384
21384
22385
23385
24385
25386
26386
27386
28397
29398
30398
31398

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in October

Winds average 16 km/h in October.

Across October, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 06 min at the start of October to 8 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 168 minutes over October. Sunrise moves from 6:28 AM to 7:46 AM, and sunset from 5:35 PM to 4:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:285:35
211.06:305:32
310.96:335:29
410.86:355:25
510.76:385:22
610.66:405:19
710.66:435:16
810.56:455:13
910.46:485:10
1010.36:505:07
1110.26:535:04
1210.16:565:01
1310.06:584:58
149.97:014:55
159.87:034:52
169.77:064:49
179.67:094:46
189.57:114:43
199.47:144:40
209.37:164:37
219.27:194:34
229.27:224:31
239.17:244:28
249.07:274:25
258.97:304:22
268.87:324:19
278.77:354:17
288.67:384:14
298.57:404:11
308.47:434:08
318.37:464:06

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 1.04 kWh/m².

For context, solar energy here swings from a low near 0.14 kWh/m² to a high of 5.61 kWh/m² in June across the year — October's 1.04 kWh/m² falls in the middle.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.7Dim
21.6Dim
31.6Dim
41.5Dim
51.5Dim
61.4Dim
71.4Dim
81.3Dim
91.3Dim
101.3Dim
111.2Dim
121.2Dim
131.1Dim
141.1Dim
151.1Dim
161.0Dim
171.0Dim
181.0Dim
190.9Dim
200.9Dim
210.9Dim
220.8Dim
230.8Dim
240.8Dim
250.8Dim
260.7Dim
270.7Dim
280.7Dim
290.7Dim
300.6Dim
310.6Dim
Planning a trip in October

Is October a good time to visit Kotka?

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

1.3
Sightseeing
6th-best month of the year
0.0
Beach & pool
6th-best month of the year

October is a weaker month for outdoor sightseeing in Kotka.

What to pack for Kotka in October

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

In October, Kotka sees daytime highs around 8°C and nights near 4°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 12 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Kotka in October

The nearest coast averages about 10°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 17°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
Apr2Bracing
May6Bracing
Jun12Bracing
Jul17Cool
Aug17Cool
Sep14Bracing
Oct10Bracing
Nov7Bracing
Dec4Bracing

UV index in Kotka in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kotka peaks around June 20 at about 5 (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 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 20UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5High
Jul5Moderate
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Kotka?

Kotka sits at 60.5°N, 26.9°E, 1 m above sea level, in Finland. The nearest listed city is Karhula, 6.0 km away.

OrimattilaLahtiMäntsälä

Topography around Kotka

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

Within 3 km, the terrain around Kotka has only modest variations in elevation — a maximum elevation change of 32 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 87 m; within 80 km, only modest variations in elevation — a maximum elevation change of 177 m.

The land around Kotka is covered by water (59%) and artificial surfaces (20%) within 3 km, water (54%) and trees (34%) within 16 km, and water (51%) and trees (40%) within 80 km.

3 km
32 m
16 km
87 m
80 km
177 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
October weather nearby: Karhula 6.0 km · Hamina 18 km · Anjala 25 km · Kouvola 46 km · Porvoo 71 km · Orimattila 76 km · Lahti 90 km · Mäntsälä 91 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 Kotka (60.4664°, 26.9458°, elevation 1 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).