Keflavik weather in October

In October, Keflavik sees average daytime highs of 7°C and overnight lows near 4°C, with 120 mm of precipitation across 15.4 wet days and about 9.3 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 8°C in the first days to 6°C by the end. The sky is clear or mostly clear about 16% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of October to 7 h 42 min by month's end. Set against the rest of the year, October is Keflavik's 1st-clearest and 6th-windiest month. For the whole year in context, see Keflavik's year-round climate.

Daytime high
6th warmest
Overnight low
7th coldest
Precipitation
120 mm
15.4 wet days
Daylight
9 h 18 min
8:36 AM – 5:55 PM
Cloud cover
72%
1st clearest
Wind
23 km/h
6th windiest
Solar energy
0.95 kWh/m²
Travel score
0.8
out of 10

Keflavik is town in Iceland.

Founded
1501

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 8°C in the first days to 6°C by the end.

A typical October day in Keflavik reaches about 7°C in the afternoon and slips back to 4°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 10°C. Set against its neighbours, October runs about 3°C cooler than September and about 2°C warmer than November.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
196
296
386
486
586
685
785
885
985
1085
1185
1285
1375
1475
1575
1674
1774
1874
1974
2074
2164
2264
2364
2463
2563
2663
2763
2863
2963
3063
3163

How October really feels in Keflavik

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 16 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
16
wind chill below the day's low

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

Keflavik weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 12518.89.750.0
Feb / -0°12317.410.480.0
Mar / 11317.69.311.20.0
Apr / 9115.43.414.60.3
May / 7913.90.517.81.2
Jun11° / 6712.8020.12.3
Jul12° / 10°7412.8019.13.0
Aug12° / 10°9714.20162.8
Sep10° / 13417.2012.71.8
Oct / 12015.41.69.30.8
Nov / 12417.24.96.10.0
Dec / 12918.69.13.90.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22773
32773
42773
52872
62872
72773
82872
92872
102872
112971
122872
132872
142872
152872
162872
172971
182971
192971
202971
212971
223070
233070
243268
253169
263070
273070
283070
293070
302971
312971

Chance of precipitation in October

Any precipitationSnow

Keflavik gets around 120 mm of rain and snow over 15.4 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 50% and peaks near 57% on the wettest days, and about 2 days bring snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1572
2572
3573
4563
5563
6563
7553
8553
9543
10533
11523
12513
13504
14504
15494
16484
17475
18465
19465
20456
21456
22456
23456
24457
25467
26468
27478
28488
29499
30519
315210

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 23 km/h in October.

Across October, daily wind ranges from about 23 km/h on the calmest days to 25 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
123breezy
223breezy
323breezy
423breezy
523breezy
623breezy
723breezy
823breezy
923breezy
1023breezy
1123breezy
1223breezy
1323breezy
1423breezy
1523breezy
1623breezy
1723breezy
1823breezy
1923breezy
2023breezy
2123breezy
2223breezy
2324breezy
2424breezy
2524breezy
2624breezy
2724breezy
2824breezy
2925breezy
3025breezy
3125breezy

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 hours at the start of October to 7 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 198 minutes over October. Sunrise moves from 7:50 AM to 9:24 AM, and sunset from 6:49 PM to 5:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.07:506:49
210.97:536:45
310.87:566:41
410.67:596:38
510.58:026:34
610.48:056:31
710.38:086:27
810.28:116:23
910.18:146:20
1010.08:176:16
119.98:206:13
129.88:236:09
139.78:266:06
149.58:296:02
159.48:325:58
169.38:365:55
179.28:395:51
189.18:425:48
199.08:455:45
208.98:485:41
218.88:515:38
228.78:555:34
238.68:585:31
248.49:015:27
258.39:045:24
268.29:075:21
278.19:115:17
288.09:145:14
297.99:175:11
307.89:205:07
317.79:245:04

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 0.95 kWh/m².

For context, solar energy here swings from a low near 0.05 kWh/m² to a high of 5.38 kWh/m² in June across the year — October's 0.95 kWh/m² falls in the middle.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.4Dim
21.4Dim
31.4Dim
41.4Dim
51.3Dim
61.3Dim
71.3Dim
81.2Dim
91.2Dim
101.1Dim
111.1Dim
121.1Dim
131.0Dim
141.0Dim
151.0Dim
160.9Dim
170.9Dim
180.9Dim
190.8Dim
200.8Dim
210.8Dim
220.8Dim
230.7Dim
240.7Dim
250.7Dim
260.7Dim
270.6Dim
280.6Dim
290.6Dim
300.6Dim
310.5Dim
Planning a trip in October

Is October a good time to visit Keflavik?

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

0.8
Sightseeing
6th-best month of the year
Beach & pool
never really warm enough

October is a weaker month for outdoor sightseeing in Keflavik.

What to pack for Keflavik in October

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

In October, Keflavik sees daytime highs around 7°C and nights near 4°C. Pack a warm layer and rain gear. Worth having: a heavy coat and a windbreaker. About 15 days see rain.

a warm layerrain geara heavy coata windbreaker

Sea temperature near Keflavik in October

The nearest coast averages about 8°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 km away) is warmest in August at about 11°C and coldest in March near 5°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

4°6°8°10°12°JanFebMarAprMayJunJulAugSepOctNovDecbracing
Sea temperature (°C)Comfort
Jan6Bracing
Feb5Bracing
Mar5Bracing
Apr6Bracing
May7Bracing
Jun9Bracing
Jul11Bracing
Aug11Bracing
Sep10Bracing
Oct8Bracing
Nov7Bracing
Dec6Bracing

UV index in Keflavik 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 Keflavik peaks around June 21 at about 4 (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 3 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJun 21UV 4Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb0Low
Mar1Low
Apr2Moderate
May3Moderate
Jun5Moderate
Jul4Moderate
Aug3Moderate
Sep2Low
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Keflavik?

Keflavik sits at 64.0°N, 22.6°W, 5 m above sea level, in Iceland. The nearest listed city is Reykjanesbær, 1.0 km away.

HafnarfjörðurKópavogurReykjavikVikAkureyri

Topography around Keflavik

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

Within 3 km, the terrain around Keflavik has only modest variations in elevation — a maximum elevation change of 60 m around an average of 17 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 187 m; within 80 km, large variations in elevation — a maximum elevation change of 1,065 m.

The land around Keflavik is covered by grassland (45%) and water (37%) within 3 km, water (57%) and grassland (36%) within 16 km, and water (67%) and grassland (28%) within 80 km.

3 km
60 m
16 km
187 m
80 km
1,065 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmoss and lichen
October weather nearby: Reykjanesbær 1.0 km · Hafnarfjörður 31 km · Kópavogur 34 km · Reykjavik 36 km · Vik 187 km · Akureyri 282 km · Tórshavn 825 km · Isle of Lewis 1,076 km

Iceland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 118% of US
price level, 2025
GDP per capita
$98,323
2025
Happiness
7.5 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.3
per 100k, 2023
Road deaths
2
per 100k/yr, 2019
Income group
High
World Bank
Religion
Evangelical Lutheran Church of Iceland 59%other or unspecified 19%none 8%Independent Congregation of Reykjavik 3%

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 Keflavik (64.0049°, -22.5624°, elevation 5 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).