Arendal weather in October

In October, Arendal sees average daytime highs of 11°C and overnight lows near 6°C, with 111 mm of precipitation across 13.5 wet days and about 9.9 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 13°C in the first days to 9°C by the end. The sky is clear or mostly clear about 23% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 12 min at the start of October to 8 h 36 min by month's end. Set against the rest of the year, October is Arendal's 8th-clearest and 6th-windiest month. For the whole year in context, see Arendal's year-round climate.

Daytime high
11°
6th warmest
Overnight low
7th coldest
Precipitation
111 mm
13.5 wet days
Daylight
9 h 54 min
7:13 AM – 5:07 PM
Cloud cover
68%
8th clearest
Wind
14 km/h
6th windiest
Solar energy
1.3 kWh/m²
Travel score
2.5
out of 10

Arendal is city of Norway.

Founded
1723

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 13°C in the first days to 9°C by the end.

A typical October day in Arendal reaches about 11°C in the afternoon and slips back to 6°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 14°C. Set against its neighbours, October runs about 5°C cooler than September and about 5°C warmer than November.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1148
2137
3137
4137
5137
6137
7137
8126
9126
10126
11126
12126
13116
14116
15115
16115
17115
18115
19105
20105
21105
22105
23105
24105
25104
2694
2794
2894
2994
3094
3194

How October really feels in Arendal

Once humidity and wind are folded in, October 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

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Arendal weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°10413.78.66.80.0
Feb / -2°75117.88.90.0
Mar / -0°709.85.611.40.5
Apr11° / 599.81.4142.5
May15° / 6810.20.116.44.7
Jun19° / 11°8010.5017.86.0
Jul21° / 13°7610.2017.36.5
Aug20° / 13°10212.2015.16.1
Sep16° / 10212.1012.54.7
Oct11° / 11113.50.59.92.5
Nov / 10713.93.27.50.6
Dec / -1°9713.35.16.10.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 64%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33961
43961
54060
64060
74060
84060
93961
104060
114060
123961
133862
143763
153763
163664
173664
183565
193565
203466
213466
223466
233466
243367
253367
263367
273367
283367
293466
303466
313367

Chance of precipitation in October

Any precipitationSnow

Arendal gets around 111 mm of rain and snow over 13.5 wet days in October, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 43% and peaks near 48% on the wettest days, and about 1 day brings snow. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1410
2410
3410
4410
5400
6400
7400
8390
9390
10391
11391
12391
13391
14391
15401
16401
17412
18422
19432
20442
21452
22462
23473
24483
25483
26483
27484
28484
29484
30484
31485

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1973
2982
3982
4982
5982
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in October

Winds average 14 km/h in October.

Across October, daily wind ranges from about 14 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 12 min at the start of October to 8 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 156 minutes over October. Sunrise moves from 6:38 AM to 7:49 AM, and sunset from 5:50 PM to 4:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:385:50
211.16:405:47
311.06:435:44
410.96:455:41
510.86:475:38
610.86:505:35
710.76:525:32
810.66:545:29
910.56:575:26
1010.46:595:23
1110.37:015:21
1210.27:045:18
1310.17:065:15
1410.17:095:12
1510.07:115:09
169.97:135:07
179.87:165:04
189.77:185:01
199.67:204:58
209.57:234:56
219.57:254:53
229.47:284:50
239.37:304:48
249.27:324:45
259.17:354:43
269.07:374:40
279.07:404:37
288.97:424:35
298.87:454:32
308.77:474:30
318.67:494:28

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 1.3 kWh/m².

For context, solar energy here swings from a low near 0.27 kWh/m² to a high of 5.96 kWh/m² in June across the year — October's 1.3 kWh/m² falls in the middle.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.9Dim
21.9Dim
31.8Dim
41.8Dim
51.7Dim
61.7Dim
71.6Dim
81.6Dim
91.6Dim
101.5Dim
111.5Dim
121.4Dim
131.4Dim
141.4Dim
151.3Dim
161.3Dim
171.3Dim
181.2Dim
191.2Dim
201.1Dim
211.1Dim
221.1Dim
231.0Dim
241.0Dim
251.0Dim
260.9Dim
270.9Dim
280.9Dim
290.9Dim
300.8Dim
310.8Dim
Planning a trip in October

Is October a good time to visit Arendal?

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

2.5
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 Arendal.

What to pack for Arendal in October

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

In October, Arendal sees daytime highs around 11°C and nights near 6°C. Pack a warm layer. Worth having: rain gear. About 14 days see rain.

a warm layerrain gear

Sea temperature near Arendal in October

The nearest coast averages about 12°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 18°C and coldest in February near 4°C.

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

0°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan5Bracing
Feb4Bracing
Mar4Bracing
Apr6Bracing
May10Bracing
Jun15Bracing
Jul17Cool
Aug18Cool
Sep15Cool
Oct12Bracing
Nov9Bracing
Dec7Bracing

UV index in Arendal 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 Arendal peaks around August 10 at about 5 (moderate) — a little sun protection helps at midday. It bottoms out near December 20 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowAug 10UV 5Dec 20UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May5Moderate
Jun4Moderate
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low
Location & terrain

Where is Arendal?

Arendal sits at 58.5°N, 8.8°E, 19 m above sea level, in Norway. The nearest listed city is Grimstad, 17 km away.

Topography around Arendal

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

Within 3 km, the terrain around Arendal has only modest variations in elevation — a maximum elevation change of 112 m around an average of 41 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 289 m; within 80 km, large variations in elevation — a maximum elevation change of 944 m.

The land around Arendal is covered by trees (62%) within 3 km, trees (49%) and water (42%) within 16 km, and trees (57%) and water (36%) within 80 km.

3 km
112 m
16 km
289 m
80 km
944 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Grimstad 17 km · Kristiansand 57 km · Porsgrunn 91 km · Skien 96 km · Larvik 98 km · Sandefjord 112 km · Tønsberg 130 km · Hjørring 132 km

Norway travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 91% of US
price level, 2025
GDP per capita
$94,594
2025
Happiness
7.2 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
2.1
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 613
Religion
Church of Norway 68%other Christian 4%Muslim 3%Roman Catholic 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 Arendal (58.4615°, 8.7725°, elevation 19 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).