Undersåker, Sweden experiences average highs of 6°C (43°F) and lows of 0°C (32°F) throughout the year. Rainfall is frequent, averaging about 14 rainy days per month. Average highs have warmed by 1.4°C (2.5°F) across the available records.
Undersåker, Sweden Weather & Climate 2026
Monthly climate averages for Undersåker, Sweden. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Feb–Dec 
Wetter season: Jan–Oct At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
3/10
Best: June, July, August
UV Index
2
Low
Temperature 6°C / 0°C
Feels Like 3°C / -4°C
Rainy Days 14
Rainfall 71 mm
Sunshine 7 h
Humidity 83%
Wind Speed 15 km/h
Dew Point 0°C
Snow Days 13 days
Frost Days 23 days
Hottest Month
18°C
July
Avg Low 10°C
Rain 17 days
Coldest Month
-9°C
January
Avg High -4°C
Rain 15 days
Driest Month
10 days
February
Avg High -3°C
Avg Low -8°C
Windiest Month
17 km/h
January (Gusts 45)
Worst Time to Visit
Consider avoiding January, October, November, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 02:55
Daylight 20.4h
Sunset 23:21
Live conditions —
Undersåker on the map · live conditions
Undersåker, Sweden
- Continent
- Europe
- Country
- Sweden
- City
- Undersåker
- Population
- 573
- Coordinates
- 63.32°, 13.25°
Seasonal Breakdown
Spring
Mar–May
Avg High 5°C
Avg Low -2°C
Rain 12 days/mo
Summer
Jun–Aug
Avg High 17°C
Avg Low 9°C
Rain 16 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 6°C
Avg Low 1°C
Rain 14 days/mo
Winter
Dec–Feb
Avg High -3°C
Avg Low -8°C
Rain 13 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
High Low Shaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: -4°C / -9°C . Feb: -3°C / -8°C . Mar: 0°C / -6°C . Apr: 4°C / -3°C . May: 11°C / 2°C . Jun: 16°C / 8°C . Jul: 18°C / 10°C . Aug: 16°C / 9°C . Sep: 12°C / 6°C . Oct: 5°C / 1°C . Nov: 0°C / -4°C . Dec: -2°C / -7°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 68 mm. Feb: 37 mm. Mar: 59 mm. Apr: 49 mm. May: 58 mm. Jun: 90 mm. Jul: 113 mm. Aug: 107 mm. Sep: 82 mm. Oct: 78 mm. Nov: 55 mm. Dec: 56 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 86%. Feb: 85%. Mar: 82%. Apr: 79%. May: 76%. Jun: 74%. Jul: 78%. Aug: 82%. Sep: 86%. Oct: 90%. Nov: 90%. Dec: 88%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 17 km/h . Feb: 16 km/h . Mar: 17 km/h . Apr: 15 km/h . May: 15 km/h . Jun: 15 km/h . Jul: 14 km/h . Aug: 15 km/h . Sep: 16 km/h . Oct: 15 km/h . Nov: 14 km/h . Dec: 16 km/h .
Sunshine
Sunshine
Sunshine: Jan: 1h. Feb: 4h. Mar: 7h. Apr: 11h. May: 12h. Jun: 13h. Jul: 12h. Aug: 10h. Sep: 7h. Oct: 4h. Nov: 2h. Dec: 1h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 0. Feb: UV 1. Mar: UV 2. Apr: UV 3. May: UV 4. Jun: UV 5. Jul: UV 4. Aug: UV 4. Sep: UV 2. Oct: UV 1. Nov: UV 0. Dec: UV 0.
Monthly Daylight Hours
Daylight 12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow Days Snowfall
Snow Days: Jan: 20 days. Feb: 16 days. Mar: 19 days. Apr: 15 days. May: 9 days. Jun: 1 days. Jul: 0 days. Aug: 0 days. Sep: 2 days. Oct: 11 days. Nov: 15 days. Dec: 19 days.
Climate Trends
Average highs have warmed by 1.4°C (2.5°F) across the available records. Average rainfall is trending wetter by about 28 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 21°C | Jul · 18°C |
| Coldest month | Feb 2025 · -8°C | Jan · -9°C |
| Wettest month | Jun 2025 · 136 mm | Jul · 113 mm |
| Windiest month | Mar 2025 · 19 km/h | Jan · 17 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May
Poor June best
Good July best
Good August best
Fair September
Fair October
Poor November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | -4°C / -9°C | -9°C / -14°C | 15days (68 mm) Wet | 1.2h Poor | 86% Very Muggy | 0.3 Low | Poor | View Details |
| February | -3°C / -8°C | -7°C / -13°C | 10days (37 mm) Wet | 4.2h Fair | 85% Humid | 1 Low | Poor | View Details |
| March | 0°C / -6°C | -4°C / -10°C | 13days (59 mm) Wet | 7h Good | 82% Humid | 2 Low | Poor | View Details |
| April | 4°C / -3°C | 0°C / -7°C | 12days (49 mm) Wet | 10.5h Excellent | 79% Humid | 3.2 Moderate | Poor | View Details |
| May | 11°C / 2°C | 8°C / -1°C | 11days (58 mm) Wet | 12.1h Excellent | 76% Humid | 4.1 Moderate | Poor | View Details |
| June best | 16°C / 8°C | 14°C / 6°C | 15days (90 mm) Wet | 12.5h Excellent | 74% Muggy | 4.5 Moderate | Good | View Details |
| July best | 18°C / 10°C | 16°C / 9°C | 17days (113 mm) Wet | 11.8h Excellent | 78% Humid | 4.4 Moderate | Good | View Details |
| August best | 16°C / 9°C | 14°C / 7°C | 16days (107 mm) Wet | 9.8h Good | 82% Humid | 3.6 Moderate | Fair | View Details |
| September | 12°C / 6°C | 10°C / 4°C | 15days (82 mm) Wet | 6.6h Fair | 86% Very Muggy | 2.3 Moderate | Fair | View Details |
| October | 5°C / 1°C | 2°C / -2°C | 16days (78 mm) Wet | 4.2h Fair | 90% Very Muggy | 1 Low | Poor | View Details |
| November | 0°C / -4°C | -4°C / -8°C | 12days (55 mm) Wet | 1.6h Poor | 90% Very Muggy | 0.4 Low | Poor | View Details |
| December | -2°C / -7°C | -7°C / -12°C | 13days (56 mm) Wet | 0.8h Poor | 88% Very Muggy | 0.1 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Undersåker are June, July, August, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Undersåker, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Undersåker is July, with average daytime highs of 18°C (64°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Undersåker is January, with average overnight lows of -9°C (16°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Undersåker is July, averaging 113mm of precipitation across 17 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Undersåker runs through July, August, October, January, with the heaviest rainfall in July. Based on 10-year averages for Undersåker.
Undersåker receives approximately 82 sunshine hours per year. The sunniest month is June with around 13 hours. Based on climate data for Undersåker.
The least favorable months to visit Undersåker are January, October, November, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider June, July, August instead.
The annual average UV index in Undersåker is 2, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Undersåker is 83%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Yes, Undersåker receives snow. Months with snowfall average 13 snow days and 23 cm (9 in) of accumulation, with about 23 frost days during winter.
Average wind speeds in Undersåker are 15 km/h (9 mph). The windiest month is January with peak winds reaching 17 km/h (10 mph) (gusts up to 45 km/h / 28 mph).
Undersåker averages 1 clear-sky days per month with overall cloud cover around 77%. The clearest skies occur in April.
The annual average dew point in Undersåker is 0°C (32°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Undersåker has a Subarctic climate, classified as Dfc under the Köppen system. Continental climates experience extreme temperature ranges — hot summers and cold, snowy winters.
The 'feels like' temperature in Undersåker ranges from -4°C (25°F) to 3°C (37°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 Undersåker. It earns a climate score of 6.6/10 with Good.
For June in Undersåker, pack Layered clothing, Light jacket, Umbrella, Waterproof jacket, Waterproof shoes. With average highs of 16°C (61°F) and 15 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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