Byske, Sweden experiences average highs of 7°C (45°F) and lows of 2°C (36°F) throughout the year. Rainfall is moderate, averaging about 10 rainy days per month. Average highs have warmed by 1.5°C (2.7°F) across the available records.
Byske, Sweden Weather & Climate 2026
Monthly climate averages for Byske, Sweden. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Nov 
Wetter season: Jul–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
3.6/10
Best: June, July, August
UV Index
2
Low
Temperature 7°C / 2°C
Feels Like 4°C / -2°C
Rainy Days 10
Rainfall 52 mm
Sunshine 7 h
Humidity 79%
Wind Speed 19 km/h
Dew Point 1°C
Snow Days 10 days
Frost Days 21 days
Hottest Month
20°C
July
Avg Low 14°C
Rain 11 days
Coldest Month
-9°C
January
Avg High -4°C
Rain 10 days
Driest Month
7 days
March
Avg High 0°C
Avg Low -5°C
Windiest Month
22 km/h
January (Gusts 40)
Sea Temperature
0°C – 17°C
Warmest water: July (
16.6°C
)
Worst Time to Visit
Consider avoiding January, February, November, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 02:34
Daylight 20.2h
Sunset 22:46
Live conditions —
Byske on the map · live conditions
Byske, Sweden
- Continent
- Europe
- Country
- Sweden
- City
- Byske
- Population
- 1.8K
- Coordinates
- 64.95°, 21.21°
Seasonal Breakdown
Spring
Mar–May
Avg High 6°C
Avg Low -1°C
Rain 7 days/mo
Summer
Jun–Aug
Avg High 19°C
Avg Low 13°C
Rain 11 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 7°C
Avg Low 3°C
Rain 10 days/mo
Winter
Dec–Feb
Avg High -3°C
Avg Low -7°C
Rain 10 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 / -5°C . Apr: 5°C / -2°C . May: 12°C / 4°C . Jun: 18°C / 11°C . Jul: 20°C / 14°C . Aug: 18°C / 13°C . Sep: 13°C / 9°C . Oct: 6°C / 3°C . Nov: 1°C / -3°C . Dec: -1°C / -6°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 51 mm. Feb: 36 mm. Mar: 32 mm. Apr: 37 mm. May: 35 mm. Jun: 49 mm. Jul: 64 mm. Aug: 77 mm. Sep: 62 mm. Oct: 73 mm. Nov: 52 mm. Dec: 59 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 82%. Feb: 84%. Mar: 79%. Apr: 75%. May: 66%. Jun: 67%. Jul: 73%. Aug: 78%. Sep: 81%. Oct: 86%. Nov: 86%. Dec: 85%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 22 km/h . Feb: 20 km/h . Mar: 20 km/h . Apr: 18 km/h . May: 18 km/h . Jun: 18 km/h . Jul: 16 km/h . Aug: 18 km/h . Sep: 19 km/h . Oct: 19 km/h . Nov: 20 km/h . Dec: 21 km/h .
Sunshine
Sunshine
Sunshine: Jan: 1h. Feb: 3h. Mar: 7h. Apr: 10h. May: 13h. Jun: 15h. Jul: 13h. Aug: 11h. Sep: 7h. Oct: 4h. Nov: 1h. Dec: 1h.
Sea Temperature
Sea Temperature swim
Line chart showing monthly sea temperature. Jan: 0°C . Feb: 0°C . Mar: 0°C . Apr: 1°C . May: 5°C . Jun: 12°C . Jul: 17°C . Aug: 17°C . Sep: 13°C . Oct: 8°C . Nov: 3°C . Dec: 0°C .
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: 16 days. Feb: 12 days. Mar: 12 days. Apr: 8 days. May: 2 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 4 days. Nov: 11 days. Dec: 17 days.
Climate Trends
Average highs have warmed by 1.5°C (2.7°F) across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 23°C | Jul · 20°C |
| Coldest month | Jan 2025 · -8°C | Jan · -9°C |
| Wettest month | Oct 2025 · 88 mm | Aug · 77 mm |
| Windiest month | Jan 2025 · 22 km/h | Jan · 22 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May
Fair June best
Excellent July best
Excellent August best
Good 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 | 10days (51 mm) Wet | 1.1h Poor | 82% Humid | 0.2 Low | Poor | View Details |
| February | -3°C / -8°C | -8°C / -13°C | 8days (36 mm) Wet | 3.1h Poor | 84% Humid | 0.8 Low | Poor | View Details |
| March | 0°C / -5°C | -4°C / -10°C | 7days (32 mm) Good | 7.2h Good | 79% Humid | 2 Low | Poor | View Details |
| April | 5°C / -2°C | 1°C / -6°C | 7days (37 mm) Good | 10.4h Excellent | 75% Muggy | 3.2 Moderate | Poor | View Details |
| May | 12°C / 4°C | 9°C / 1°C | 7days (35 mm) Good | 13.3h Excellent | 66% Muggy | 4.3 Moderate | Fair | View Details |
| June best | 18°C / 11°C | 16°C / 9°C | 9days (49 mm) Wet | 14.5h Excellent | 67% Muggy | 4.7 Moderate | Excellent | View Details |
| July best | 20°C / 14°C | 19°C / 13°C | 11days (64 mm) Wet | 13.4h Excellent | 73% Muggy | 4.4 Moderate | Excellent | View Details |
| August best | 18°C / 13°C | 17°C / 11°C | 12days (77 mm) Wet | 10.9h Excellent | 78% Humid | 3.6 Moderate | Good | View Details |
| September | 13°C / 9°C | 11°C / 6°C | 10days (62 mm) Wet | 6.9h Fair | 81% Humid | 2.3 Moderate | Fair | View Details |
| October | 6°C / 3°C | 3°C / -1°C | 11days (73 mm) Wet | 3.9h Poor | 86% Very Muggy | 1 Low | Poor | View Details |
| November | 1°C / -3°C | -4°C / -8°C | 10days (52 mm) Wet | 1.4h Poor | 86% Very Muggy | 0.3 Low | Poor | View Details |
| December | -1°C / -6°C | -6°C / -11°C | 13days (59 mm) Wet | 0.5h Poor | 85% Humid | 0.1 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Byske are June, July, August, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Byske, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Byske is July, with average daytime highs of 20°C (68°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Byske 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 Byske is August, averaging 77mm of precipitation across 12 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Byske runs through December, August, July, October, with the heaviest rainfall in December. Based on 10-year averages for Byske.
Byske receives approximately 87 sunshine hours per year. The sunniest month is June with around 15 hours. Based on climate data for Byske.
The least favorable months to visit Byske are January, February, 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 Byske is 2, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Byske is 79%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Sea temperatures in Summer average 6°C (43°F), which most swimmers will find too cold without a wetsuit.
Yes, Byske receives snow. Months with snowfall average 10 snow days and 21 cm (8 in) of accumulation, with about 21 frost days during winter.
Average wind speeds in Byske are 19 km/h (12 mph). The windiest month is January with peak winds reaching 22 km/h (13 mph) (gusts up to 40 km/h / 25 mph).
Byske averages 2 clear-sky days per month with overall cloud cover around 67%. The clearest skies occur in July.
The annual average dew point in Byske is 1°C (34°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Byske 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 Byske ranges from -2°C (28°F) to 4°C (39°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
Yes, July is a great time to visit Byske. It earns a climate score of 7.8/10 with Excellent.
For July in Byske, pack Umbrella, Waterproof jacket, Comfortable walking shoes. 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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