Asker, Norway experiences average highs of 10°C (50°F) and lows of 3°C (37°F) throughout the year. Rainfall is moderate, averaging about 11 rainy days per month. Average highs have warmed by 1.6°C (2.9°F) across the available records.
Asker, Norway Weather & Climate 2026
Monthly climate averages for Asker, Norway. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Jun 
Wetter season: Jul–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4/10
Best: May, June, July, August, September
UV Index
3
Low
Temperature 10°C / 3°C
Feels Like 7°C / 0°C
Rainy Days 11
Rainfall 81 mm
Sunshine 7 h
Humidity 80%
Wind Speed 13 km/h
Dew Point 3°C
Snow Days 7 days
Frost Days 17 days
Hottest Month
21°C
July
Avg Low14°C
Rain13days
Coldest Month
-7°C
January
Avg High-3°C
Rain10days
Driest Month
8days
April
Avg High10°C
Avg Low0°C
Windiest Month
14 km/h
October (Gusts 32)
Sea Temperature
0°C – 21°C
Warmest water: July (
20.5°C
)
Worst Time to Visit
Consider avoiding January, February, November, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 03:58
Daylight 18.7h
Sunset 22:42
Live conditions—
Asker on the map · live conditions
Asker, Norway
- Continent
- Europe
- Country
- Norway
- City
- Asker
- Population
- 61.9K
- Coordinates
- 59.83°, 10.44°
Seasonal Breakdown
Spring
Mar–May
Avg High 10°C
Avg Low 1°C
Rain 9 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 20°C
Avg Low 13°C
Rain 12 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 9°C
Avg Low 5°C
Rain 12 days/mo
1/3 best months
Winter
Dec–Feb
Avg High -1°C
Avg Low -6°C
Rain 11 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: -3°C / -7°C . Feb: 0°C / -6°C . Mar: 4°C / -3°C . Apr: 10°C / 0°C . May: 16°C / 6°C . Jun: 20°C / 12°C . Jul: 21°C / 14°C . Aug: 19°C / 13°C . Sep: 16°C / 10°C . Oct: 9°C / 5°C . Nov: 4°C / 0°C . Dec: -1°C / -5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 80 mm. Feb: 61 mm. Mar: 57 mm. Apr: 48 mm. May: 58 mm. Jun: 82 mm. Jul: 106 mm. Aug: 100 mm. Sep: 101 mm. Oct: 105 mm. Nov: 93 mm. Dec: 82 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 87%. Feb: 84%. Mar: 80%. Apr: 70%. May: 67%. Jun: 70%. Jul: 73%. Aug: 79%. Sep: 82%. Oct: 87%. Nov: 90%. Dec: 91%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 13 km/h . Feb: 13 km/h . Mar: 13 km/h . Apr: 13 km/h . May: 13 km/h . Jun: 13 km/h . Jul: 13 km/h . Aug: 13 km/h . Sep: 13 km/h . Oct: 14 km/h . Nov: 13 km/h . Dec: 12 km/h .
Sunshine
Sunshine
Sunshine: Jan: 3h. Feb: 5h. Mar: 7h. Apr: 10h. May: 12h. Jun: 13h. Jul: 13h. Aug: 10h. Sep: 7h. Oct: 5h. Nov: 2h. Dec: 2h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 1°C . Feb: 0°C . Mar: 3°C . Apr: 7°C . May: 13°C . Jun: 18°C . Jul: 21°C . Aug: 19°C . Sep: 16°C . Oct: 11°C . Nov: 6°C . Dec: 3°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 1. Feb: UV 1. Mar: UV 2. Apr: UV 4. May: UV 5. Jun: UV 6. Jul: UV 5. Aug: UV 4. Sep: UV 3. Oct: UV 2. Nov: UV 1. Dec: UV 0.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 13 days. Feb: 12 days. Mar: 9 days. Apr: 3 days. May: 1 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 1 days. Nov: 7 days. Dec: 12 days.
Climate Trends
Average highs have warmed by 1.6°C (2.9°F) across the available records. Average rainfall is trending wetter by about 19 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 23°C | Jul · 21°C |
| Coldest month | Jan 2025 · -7°C | Jan · -7°C |
| Wettest month | Oct 2025 · 160 mm | Jul · 106 mm |
| Windiest month | May 2025 · 17 km/h | Oct · 14 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May best
Fair June best
Good July best
Excellent August best
Excellent September best
Good October
Poor November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | -3°C / -7°C | -7°C / -12°C | 10days (80 mm) Wet | 2.6h Poor | 87% Very Muggy | 0.5 Low | Poor | View Details |
| February | 0°C / -6°C | -4°C / -10°C | 10days (61 mm) Wet | 5h Fair | 84% Humid | 1.1 Low | Poor | View Details |
| March | 4°C / -3°C | 1°C / -7°C | 9days (57 mm) Wet | 7.2h Good | 80% Humid | 2.2 Moderate | Poor | View Details |
| April | 10°C / 0°C | 6°C / -3°C | 8days (48 mm) Wet | 10.3h Excellent | 70% Muggy | 3.6 Moderate | Poor | View Details |
| May best | 16°C / 6°C | 14°C / 4°C | 9days (58 mm) Wet | 12.1h Excellent | 67% Muggy | 4.9 Moderate | Fair | View Details |
| June best | 20°C / 12°C | 19°C / 10°C | 11days (82 mm) Wet | 13.1h Excellent | 70% Muggy | 5.5 High | Good | View Details |
| July best | 21°C / 14°C | 21°C / 13°C | 13days (106 mm) Wet | 12.5h Excellent | 73% Muggy | 4.8 Moderate | Excellent | View Details |
| August best | 19°C / 13°C | 19°C / 12°C | 13days (100 mm) Wet | 10.4h Excellent | 79% Humid | 4.1 Moderate | Excellent | View Details |
| September best | 16°C / 10°C | 14°C / 8°C | 12days (101 mm) Wet | 7.1h Good | 82% Humid | 2.8 Moderate | Good | View Details |
| October | 9°C / 5°C | 7°C / 2°C | 13days (105 mm) Wet | 4.7h Fair | 87% Very Muggy | 1.5 Low | Poor | View Details |
| November | 4°C / 0°C | 1°C / -3°C | 12days (93 mm) Wet | 2.3h Poor | 90% Very Muggy | 0.6 Low | Poor | View Details |
| December | -1°C / -5°C | -4°C / -9°C | 13days (82 mm) Wet | 1.5h Poor | 91% Very Muggy | 0.3 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Asker are May, June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Asker, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Asker is July, with average daytime highs of 21°C (70°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Asker is January, with average overnight lows of -7°C (19°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Asker is July, averaging 106mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Asker runs through July, August, October, December, with the heaviest rainfall in July. Based on 10-year averages for Asker.
Asker receives approximately 89 sunshine hours per year. The sunniest month is June with around 13 hours. Based on climate data for Asker.
The least favorable months to visit Asker are January, February, November, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider May, June, July, August, September instead.
The annual average UV index in Asker is 3, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Asker is 80%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Sea temperatures in Summer average 10°C (50°F), which most swimmers will find too cold without a wetsuit.
Yes, Asker receives snow. Months with snowfall average 7 snow days and 19 cm (7 in) of accumulation, with about 17 frost days during winter.
Average wind speeds in Asker are 13 km/h (8 mph). The windiest month is October with peak winds reaching 14 km/h (9 mph) (gusts up to 32 km/h / 20 mph).
Asker averages 2 clear-sky days per month with overall cloud cover around 66%. The clearest skies occur in April.
The annual average dew point in Asker is 3°C (37°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Asker has a Warm-Summer Continental climate, classified as Dfb under the Köppen system. Continental climates experience extreme temperature ranges — hot summers and cold, snowy winters.
The 'feels like' temperature in Asker ranges from 0°C (32°F) to 7°C (45°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
Yes, June is a great time to visit Asker. It earns a climate score of 7/10 with Good.
For June in Asker, pack Warm evening layer, Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses. With average highs of 20°C (68°F) and 11 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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