AI-generatedArendal at a glance
- Best time
- May – Aug
- Warmest month
- Jul · 20°
- Warmest sea
- Aug · 17.8°
- Sunshine a year
- 1,940 h
- Rain a year
- 1,098 mm
- Climate
- Maritime
- Time zone
- UTC+1 / UTC+2
- Elevation
- 19 m
Climate in Arendal
Arendal has a maritime climate with moderate summers and cool, often grey winters. July is the warmest month with average highs of 20 °C, while February is the coolest at 4 °C. With around 1,940 hours of sunshine a year, Arendal is moderately sunny; June is the sunniest month with 9.2 hours a day.
Holiday weather through the year
Best time to visit Arendal
The best time to visit Arendal is from May to August. The sea stays too cool for a classic beach holiday: even in August it only reaches 17.8 °C. For sightseeing, day trips and hiking, conditions are most comfortable from June to July and in September. Rain is frequent from October to January; the wettest month is October with 118 mm.
Arendal through the seasons
How the weather changes over the seasons, with averages for each.
Arendal in spring
Mar – May
Poor
- 5–13 °C by day
- Sea 7 °C
- 7.0 h of sun a day
- 31 rainy days in all
Arendal in summer
Jun – Aug
Poor
- 17–20 °C by day
- Sea 17 °C
- 8.7 h of sun a day
- 35 rainy days in all
Arendal in autumn
Sep – Nov
Poor
- 8–16 °C by day
- Sea 13 °C
- 3.6 h of sun a day
- 40 rainy days in all
Arendal in winter
Dec – Feb
Poor
- 4–5 °C by day
- Sea 5 °C
- 2.0 h of sun a day
- 39 rainy days in all
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Jun – Jul, Sep
15–28 °C and not too much rain
Rainy months
Oct – Jan
Rainy season or more than 12 rainy days
Snow
Nov – Mar
Snow on 2 or more days
Find your perfect month
Tell us what you like and we rate every month in Arendal for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Poor
Best time to visit: May – August
Where to go in OctoberSea temperature in October
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 7°
- Midday, 13:00: about 11°
- Afternoon, 16:00: about 11°
- Evening, 20:00: about 10°
- Night, 23:00: about 9°
07:5818:23
Cold evenings: bring a warm jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:34–08:54 · evening 17:27–18:47
- Blue hour
- Morning 07:18–07:34 · evening 18:47–19:03
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Arendal compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 14° at the start of the month to 9° at the end. The sea cools from 14° to 11°. The days get 2.5 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 14° | 9° |
| Night-time low | 9° | 6° |
| Sea | 14° | 11° |
| Daylight | 11.6 h | 9.1 h |
What is the weather like in Arendal in October?
In October, Arendal is cool: daytime highs average 12 °C, and nights cool down to about 7 °C. The sea averages 12.3 °C – swimming is only for the hardy. The sun is scarce, with only about 3.5 hours a day. Rain is frequent, with about 14 rainy days and 118 mm in total. All in all, October is not an ideal month for a holiday in Arendal.
More details for October
- Daylight
- 10 h 24 min07:58 – 18:23
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 20 km/haverage daily peakAll months
- Cloud cover
- 68 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2offset from UTC
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %8 %
- Few rainy daysweight 20 %30 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Compare two months in Arendal
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
July has the better holiday weather in Arendal: score 33 against 8. In July, days are 8 °C warmer than in October. The sea is 5 °C warmer in July. July has 2 fewer rainy days. The sun shines 6 hours longer a day in July.
| Month | October | July |
|---|---|---|
| Holiday weather score | 8 | 33better |
| Daytime high | 12° | 20° |
| Night-time low | 7° | 14° |
| Sea | 12.3° | 17.2° |
| Sunshine | 3.5 h | 9.1 hbetter |
| Rainy days | 14 | 12better |
| Rainfall | 118 mm | 87 mmbetter |
Based on the climate averages 1996–2025.
Arendal month by month
The typical weather for every month at a glance.
6January4° · Sea 5° · 1.8 h
In January, Arendal is cold: daytime highs average 4 °C, and nights cool down to about 0 °C. The sea averages 5.2 °C – swimming is only for the hardy. The sun is scarce, with only about 1.8 hours a day. Precipitation falls on about 14 days, totalling 108 mm; on about 8 of them it snows. All in all, January is not an ideal month for a holiday in Arendal.
Arendal in January10February4° · Sea 4° · 2.7 h
In February, Arendal is cold: daytime highs average 4 °C, and nights often drop below freezing (−1 °C). The sea averages 3.8 °C – swimming is only for the hardy. The sun is scarce, with only about 2.7 hours a day. Precipitation falls on about 11 days, totalling 79 mm; on about 7 of them it snows. All in all, February is not an ideal month for a holiday in Arendal.
Arendal in February19March5° · Sea 4° · 5.0 h
In March, Arendal is cold: daytime highs average 5 °C, and nights cool down to about 1 °C. The sea averages 3.9 °C – swimming is only for the hardy. Expect around 5.0 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 67 mm in total. Snow falls on about 5 days. All in all, March is not an ideal month for a holiday in Arendal.
Arendal in March25April9° · Sea 6° · 7.1 h
In April, Arendal is cold: daytime highs average 9 °C, and nights cool down to about 4 °C. The sea averages 6.3 °C – swimming is only for the hardy. The sun shines for around 7.1 hours a day. Rain is frequent, with about 10 rainy days and 58 mm in total. All in all, April is not an ideal month for a holiday in Arendal.
Arendal in April29May13° · Sea 11° · 8.8 h
In May, Arendal is cool: daytime highs average 13 °C, and nights cool down to about 8 °C. The sea averages 10.5 °C – swimming is only for the hardy. The sun shines for around 8.8 hours a day. Rain is frequent, with about 11 rainy days and 74 mm in total. All in all, May is not an ideal month for a holiday in Arendal – and yet one of the best months here.
Arendal in May30June17° · Sea 15° · 9.2 h
In June, Arendal is mild: daytime highs average 17 °C, and nights cool down to about 12 °C. The sea averages 14.6 °C – swimming is only for the hardy. With around 9.2 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 11 rainy days and 82 mm in total. All in all, June is not an ideal month for a holiday in Arendal – and yet one of the best months here.
Arendal in June33July20° · Sea 17° · 9.1 h
In July, Arendal is mild: daytime highs average 20 °C, and nights cool down to about 14 °C. The sea averages 17.2 °C – bracing, so a wetsuit helps for longer swims. With around 9.1 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 12 rainy days and 87 mm in total. All in all, July is not an ideal month for a holiday in Arendal – and yet one of the best months here.
Arendal in July29August19° · Sea 18° · 7.8 h
In August, Arendal is mild: daytime highs average 19 °C, and nights cool down to about 14 °C. The sea averages 17.8 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7.8 hours a day. Rain is frequent, with about 13 rainy days and 106 mm in total. All in all, August is not an ideal month for a holiday in Arendal – and yet one of the best months here.
Arendal in August17September16° · Sea 16° · 5.4 h
In September, Arendal is mild: daytime highs average 16 °C, and nights cool down to about 12 °C. The sea averages 15.6 °C – swimming is only for the hardy. Expect around 5.4 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 102 mm in total. All in all, September is not an ideal month for a holiday in Arendal.
Arendal in September8October12° · Sea 12° · 3.5 h
In October, Arendal is cool: daytime highs average 12 °C, and nights cool down to about 7 °C. The sea averages 12.3 °C – swimming is only for the hardy. The sun is scarce, with only about 3.5 hours a day. Rain is frequent, with about 14 rainy days and 118 mm in total. All in all, October is not an ideal month for a holiday in Arendal.
Arendal in October5November8° · Sea 10° · 1.9 h
In November, Arendal is cold: daytime highs average 8 °C, and nights cool down to about 4 °C. The sea averages 9.5 °C – swimming is only for the hardy. The sun is scarce, with only about 1.9 hours a day. It rains often – on about 14 days, adding up to 115 mm. Snow falls on about 3 days. All in all, November is not an ideal month for a holiday in Arendal.
Arendal in November6December5° · Sea 7° · 1.4 h
In December, Arendal is cold: daytime highs average 5 °C, and nights cool down to about 1 °C. The sea averages 6.9 °C – swimming is only for the hardy. The sun is scarce, with only about 1.4 hours a day. It rains often – on about 14 days, adding up to 104 mm. Snow falls on about 5 days. All in all, December is not an ideal month for a holiday in Arendal.
Arendal in DecemberClimate in detail
Year & climate table
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Arendal
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
ColdOctober: nights around 7°. The room should be heated.
The coolest nights are in February (−1°), the warmest in July (14°). Nights fall below 8 °C on average from October to April, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 6 | 4° | 0° | 5.2° | 1.8 h | 14 | 108 |
| FebruaryFeb | 10 | 4° | −1° | 3.8° | 2.7 h | 11 | 79 |
| MarchMar | 19 | 5° | 1° | 3.9° | 5.0 h | 10 | 67 |
| AprilApr | 25 | 9° | 4° | 6.3° | 7.1 h | 10 | 58 |
| MayMay | 29 | 13° | 8° | 10.5° | 8.8 h | 11 | 74 |
| JuneJun | 30 | 17° | 12° | 14.6° | 9.2 h | 11 | 82 |
| JulyJul | 33 | 20° | 14° | 17.2° | 9.1 h | 12 | 87 |
| AugustAug | 29 | 19° | 14° | 17.8° | 7.8 h | 13 | 106 |
| SeptemberSep | 17 | 16° | 12° | 15.6° | 5.4 h | 12 | 102 |
| OctoberOct | 8 | 12° | 7° | 12.3° | 3.5 h | 14 | 118 |
| NovemberNov | 5 | 8° | 4° | 9.5° | 1.9 h | 14 | 115 |
| DecemberDec | 6 | 5° | 1° | 6.9° | 1.4 h | 14 | 104 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
58.46° N, 8.77° E · 19 m · Europe/Oslo
Sea temperature
Sea temperature in Arendal
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 11.3 – 13.3 °C
Swimming season: Always below 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Arendal ranges from 3.8 °C in February to 17.8 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
The sea warms up slowly: it is warmest in August, while the air already peaks in July. From October to February the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 16.9 and 18.8 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 5.2° | 4.0° | 6.6° | cold |
| FebruaryFeb | 3.8° | 2.3° | 5.4° | cold |
| MarchMar | 3.9° | 2.0° | 5.1° | cold |
| AprilApr | 6.3° | 4.7° | 7.3° | cold |
| MayMay | 10.5° | 9.6° | 11.9° | cold |
| JuneJun | 14.6° | 13.3° | 16.3° | cold |
| JulyJul | 17.2° | 15.7° | 18.9° | fresh |
| AugustAug | 17.8° | 16.9° | 18.8° | fresh |
| SeptemberSep | 15.6° | 14.6° | 16.5° | cold |
| OctoberOct | 12.3° | 11.3° | 13.3° | cold |
| NovemberNov | 9.5° | 8.4° | 10.7° | cold |
| DecemberDec | 6.9° | 5.7° | 8.2° | cold |
Sunshine
Sunshine hours in Arendal
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 3.5 of 10.4 hours of daylight in Arendal, 34 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain
Rain in Arendal: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Arendal has about 14 rainy days with 118 mm of rain in total.
UV index
UV index in Arendal
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 1 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 6).
Minutes until sunburn in October
- Very fair skin
- over 2 h
- Fair skin
- over 2 h
- Light brown skin
- over 2 h
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind & clouds
Wind and clouds in Arendal
How breezy and how cloudy Arendal is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Arendal typically peaks at 20 km/h during the day: Beaufort 4, moderate breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting: Oct – Feb.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 68 % of the sky over Arendal: mostly cloudy, with about 3.5 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Snow
Snow in Arendal
When Arendal is likely to be white: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Arendal.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Planning a trip to Arendal
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Arendal in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Arendal has its best school-holiday weather during the summer holidays (score 30) and its weakest during the Christmas holidays (score 6).
- 23
Easter holidays
Mar – Apr
Poor
- 8 °C by day
- Sea 6 °C
- 6.5 h of sun a day
- 10 rainy days a month
Keep in mind: Snow
- 29
May half-term
May – Jun
Poor
- 14 °C by day
- Sea 11 °C
- 8.9 h of sun a day
- 11 rainy days a month
- 30
Summer holidays
Jul – Aug
PoorBest holidays
- 19 °C by day
- Sea 18 °C
- 8.3 h of sun a day
- 12 rainy days a month
- 8
October half-term
Oct
Poor
- 12 °C by day
- Sea 12 °C
- 3.5 h of sun a day
- 14 rainy days a month
Keep in mind: Frequent rain
- 6
Christmas holidays
Dec – Jan
Poor
- 4 °C by day
- Sea 6 °C
- 1.6 h of sun a day
- 14 rainy days a month
Keep in mind: Frequent rain, Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 1 h 40 min
- Distance
- 970 km
- Time zone
- UTC+2
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Good to know: Norway
- Currency
- Norwegian Krone (NOK)
- Languages
- Norwegian, Norwegian Bokmål, Norwegian Nynorsk
- Sockets
- Type C, F · 230 V
- Traffic
- Drives on the right
- Dialling code
- +47
- Emergency number
- 112
UK plugs need a travel adapter
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Compare & alternatives
Compare with another place
Arendal compared
Put Arendal side by side with another destination.
Arendal vs Kristiansand
In October the holiday weather in Arendal and Kristiansand is about equally good (score 8 vs 5). During the day it is about as warm in Kristiansand as in Arendal. The sea in Kristiansand is 1 °C warmer.
| in October | Arendal | Kristiansand |
|---|---|---|
| Holiday weather score | 8 | 5 |
| Daytime high | 12° | 12° |
| Sea | 12° | 13° |
| Sunshine | 4 h | 4 h |
| Rainy days | 14 | 16 |
| Best time | May – Aug | Jul |
Through the year
Best places in the country
Norway in October: the best places
In October, Arendal ranks 22 among the 31 nearest destinations in this country.
- Skien11°26
- 2Oslo10°12°25
- 3Kongsberg10°22
- 4Hønefoss10°22
- 5Bergen12°13°21
- 6Stavanger12°13°20
- 7Måløy11°12°19
- 8Florø11°12°18
- 22ArendalThis page12°12°8
Places nearby
Near Arendal
Other destinations close by.
Places with a similar climate
Places with a climate like Arendal
Destinations whose weather through the year is closest to Arendal's – good alternatives.
Frequently asked questions about Arendal
When is the best time to visit Arendal?
The best time to visit Arendal is from May to August. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Arendal?
The sea temperature in Arendal ranges from 3.8 °C in February to 17.8 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Arendal in October?
Only if you don't mind cold water: in October the sea averages just 12.3 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Arendal?
July is the warmest month, with average highs of 20 °C and nights around 14 °C. February is the coolest month at 4 °C.
When does it rain most in Arendal?
Rain is frequent from October to January; the wettest month is October with 118 mm. The driest month is April with 58 mm.
How many hours of sunshine does Arendal get?
Arendal gets around 1,940 hours of sunshine a year. The sunniest month is June with 9.2 hours a day; in December there are 1.4 hours a day.
What time zone is Arendal in?
Arendal is on UTC+1 in January and UTC+2 in July.
How long is the flight from London to Arendal?
A nonstop flight from London to Arendal takes about 1 h 40 min, for a straight-line distance of about 970 km.
Which school holidays are best for Arendal?
Arendal has its best school-holiday weather during the summer holidays (score 30) and its weakest during the Christmas holidays (score 6). Holiday ratings (0–100): Easter holidays 23, May half-term 29, summer holidays 30, October half-term 8, Christmas holidays 6.