Grimstad weather in October

In October, Grimstad sees average daytime highs of 11°C and overnight lows near 7°C, with 119 mm of precipitation across 14.1 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 42 min by month's end. Set against the rest of the year, October is Grimstad's 8th-clearest and 5th-windiest month. For the whole year in context, see Grimstad's year-round climate.

Daytime high
11°
6th warmest
Overnight low
7th coldest
Precipitation
119 mm
14.1 wet days
Daylight
9 h 54 min
7:14 AM – 5:08 PM
Cloud cover
68%
8th clearest
Wind
19 km/h
5th windiest
Solar energy
1.33 kWh/m²
Travel score
2.5
out of 10

Grimstad is settlement in Grimstad Municipality, Norway.

Density
2,552/km²
people per km²
Founded
1816

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 Grimstad reaches about 11°C in the afternoon and slips back to 7°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 14°C. Set against its neighbours, October runs about 5°C cooler than September and about 4°C warmer than November.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1149
2139
3139
4138
5138
6138
7138
8128
9128
10128
11127
12127
13117
14117
15117
16117
17117
18116
19116
20106
21106
22106
23106
24106
25106
26106
27106
28106
2996
3095
3195

How October really feels in Grimstad

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.

Grimstad 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 / -0°10714.47.66.80.0
Feb / -1°7911.478.90.0
Mar / 7110.14.811.40.4
Apr10° / 589.91.3142.1
May14° / 6310016.44.2
Jun18° / 11°759.5017.85.8
Jul20° / 14°729.7017.26.4
Aug20° / 14°10112015.16.0
Sep16° / 11°10512.4012.54.6
Oct11° / 11914.10.39.92.5
Nov / 11514.82.47.50.8
Dec / 104144.26.20.0

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 (%)
13961
23961
33961
43961
53961
63961
73961
84060
93961
103961
113961
123961
133862
143763
153763
163763
173664
183664
193466
203466
213466
223466
233367
243367
253268
263268
273268
283268
293169
303169
313169

Chance of precipitation in October

Any precipitationSnow

Grimstad gets around 119 mm of rain and snow over 14.1 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 45% and peaks near 50% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1420
2420
3420
4420
5420
6420
7420
8410
9410
10410
11410
12410
13421
14421
15431
16441
17441
18451
19461
20471
21481
22491
23492
24502
25502
26502
27502
28502
29502
30503
31493

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 (%)
1964
2964
3973
4973
5982
6982
7982
8991
9991
10991
11991
12991
13991
14991
15991
16991
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in October

Winds average 19 km/h in October.

Across October, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
118light breeze
219light breeze
319light breeze
419light breeze
519light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2019light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze
3119light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 12 min at the start of October to 8 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 150 minutes over October. Sunrise moves from 6:39 AM to 7:50 AM, and sunset from 5:50 PM to 4:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:395:50
211.16:415:47
311.06:435:45
410.96:465:42
510.86:485:39
610.86:505:36
710.76:535:33
810.66:555:30
910.56:575:27
1010.47:005:24
1110.37:025:22
1210.27:045:19
1310.27:075:16
1410.17:095:13
1510.07:115:10
169.97:145:08
179.87:165:05
189.77:185:02
199.67:214:59
209.67:234:57
219.57:264:54
229.47:284:52
239.37:304:49
249.27:334:46
259.17:354:44
269.17:384:41
279.07:404:39
288.97:424:36
298.87:454:34
308.77:474:31
318.77:504:29

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 1.33 kWh/m².

For context, solar energy here swings from a low near 0.28 kWh/m² to a high of 6.12 kWh/m² in June across the year — October's 1.33 kWh/m² falls in the middle.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.9Dim
21.9Dim
31.9Dim
41.8Dim
51.8Dim
61.7Dim
71.7Dim
81.6Dim
91.6Dim
101.6Dim
111.5Dim
121.5Dim
131.4Dim
141.4Dim
151.4Dim
161.3Dim
171.3Dim
181.2Dim
191.2Dim
201.2Dim
211.1Dim
221.1Dim
231.1Dim
241.0Dim
251.0Dim
261.0Dim
270.9Dim
280.9Dim
290.9Dim
300.9Dim
310.8Dim
Planning a trip in October

Is October a good time to visit Grimstad?

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 Grimstad.

What to pack for Grimstad in October

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

In October, Grimstad sees daytime highs around 11°C and nights near 7°C. Pack a warm layer and rain gear. About 14 days see rain.

a warm layerrain gear

Sea temperature near Grimstad 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 Grimstad 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 Grimstad 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 Grimstad?

Grimstad sits at 58.3°N, 8.6°E, 9 m above sea level, in Norway. The nearest listed city is Arendal, 17 km away.

Topography around Grimstad

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

Within 3 km, the terrain around Grimstad has only modest variations in elevation — a maximum elevation change of 124 m around an average of 29 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 340 m; within 80 km, large variations in elevation — a maximum elevation change of 930 m.

The land around Grimstad is covered by trees (39%) and water (30%) within 3 km, water (51%) and trees (40%) within 16 km, and trees (56%) and water (37%) within 80 km.

3 km
124 m
16 km
340 m
80 km
930 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Arendal 17 km · Kristiansand 41 km · Porsgrunn 108 km · Skien 113 km · Larvik 115 km · Hjørring 127 km · Sandefjord 128 km · Skagen 136 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 Grimstad (58.3405°, 8.5934°, elevation 9 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).