Sapporo, Japan experiences average highs of 12°C (54°F) and lows of 5°C (41°F) throughout the year. Rainfall is frequent, averaging about 14 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have warmed by 1.9°C (3.4°F) across the available records.
Sapporo, Japan Weather & Climate 2026
Monthly climate averages for Sapporo, Japan. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Sep 
Wetter season: Jun–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.7/10
Best: May, June, July, August, September
UV Index
4
Low
Temperature 12°C / 5°C
Feels Like 10°C / 3°C
Rainy Days 14
Rainfall 104 mm
Sunshine 9 h
Humidity 80%
Wind Speed 15 km/h
Dew Point 5°C
Snow Days 15 days
Frost Days 23 days
Hottest Month
25°C
August
Avg Low19°C
Rain16days
Coldest Month
-9°C
January
Avg High-3°C
Rain13days
Driest Month
12days
February
Avg High-2°C
Avg Low-8°C
Windiest Month
17 km/h
November (Gusts 46)
Sea Temperature
4°C – 25°C
Warmest water: August (
24.8°C
)
Worst Time to Visit
Consider avoiding January, February, November, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 03:56
Daylight 15.3h
Sunset 19:17
Live conditions—
Sapporo on the map · live conditions
Sapporo, Japan
- Continent
- Asia
- Country
- Japan
- City
- Sapporo
- Population
- 2M
- Coordinates
- 43.07°, 141.35°
Seasonal Breakdown
Spring
Mar–May
Avg High 10°C
Avg Low 2°C
Rain 12 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 24°C
Avg Low 17°C
Rain 14 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 15°C
Avg Low 9°C
Rain 15 days/mo
1/3 best months
Winter
Dec–Feb
Avg High -2°C
Avg Low -7°C
Rain 14 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 / -9°C . Feb: -2°C / -8°C . Mar: 3°C / -4°C . Apr: 11°C / 2°C . May: 17°C / 8°C . Jun: 20°C / 13°C . Jul: 25°C / 18°C . Aug: 25°C / 19°C . Sep: 22°C / 15°C . Oct: 15°C / 9°C . Nov: 8°C / 2°C . Dec: 0°C / -5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 56 mm. Feb: 55 mm. Mar: 71 mm. Apr: 82 mm. May: 89 mm. Jun: 127 mm. Jul: 128 mm. Aug: 215 mm. Sep: 134 mm. Oct: 108 mm. Nov: 107 mm. Dec: 73 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 79%. Feb: 78%. Mar: 80%. Apr: 76%. May: 78%. Jun: 83%. Jul: 85%. Aug: 85%. Sep: 82%. Oct: 78%. Nov: 77%. Dec: 78%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 15 km/h . Feb: 15 km/h . Mar: 16 km/h . Apr: 17 km/h . May: 15 km/h . Jun: 14 km/h . Jul: 12 km/h . Aug: 13 km/h . Sep: 14 km/h . Oct: 16 km/h . Nov: 17 km/h . Dec: 16 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 8h. Mar: 9h. Apr: 10h. May: 10h. Jun: 10h. Jul: 10h. Aug: 9h. Sep: 9h. Oct: 8h. Nov: 7h. Dec: 6h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 5°C . Feb: 4°C . Mar: 4°C . Apr: 8°C . May: 12°C . Jun: 17°C . Jul: 22°C . Aug: 25°C . Sep: 23°C . Oct: 19°C . Nov: 12°C . Dec: 7°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 5. May: UV 6. Jun: UV 7. Jul: UV 6. Aug: UV 6. Sep: UV 5. Oct: UV 3. Nov: UV 2. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 24 days. Feb: 23 days. Mar: 19 days. Apr: 9 days. May: 1 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 2 days. Nov: 14 days. Dec: 27 days.
Climate Trends
Average highs have warmed by 1.9°C (3.4°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 · 28°C | Aug · 25°C |
| Coldest month | Feb 2025 · -6°C | Jan · -9°C |
| Wettest month | Sep 2025 · 237 mm | Aug · 215 mm |
| Windiest month | Dec 2025 · 18 km/h | Nov · 17 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May best
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Fair November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | -3°C / -9°C | -7°C / -13°C | 13days (56 mm) Wet | 6.9h Fair | 79% Humid | 2.2 Moderate | Poor | View Details |
| February | -2°C / -8°C | -6°C / -13°C | 12days (55 mm) Wet | 8.1h Good | 78% Humid | 3.3 Moderate | Poor | View Details |
| March | 3°C / -4°C | 0°C / -8°C | 12days (71 mm) Wet | 9h Good | 80% Humid | 4.3 Moderate | Poor | View Details |
| April | 11°C / 2°C | 9°C / -1°C | 12days (82 mm) Wet | 9.7h Good | 76% Humid | 5.3 High | Poor | View Details |
| May best | 17°C / 8°C | 16°C / 6°C | 13days (89 mm) Wet | 10.3h Excellent | 78% Humid | 6 High | Good | View Details |
| June best | 20°C / 13°C | 21°C / 13°C | 14days (127 mm) Wet | 10h Excellent | 83% Humid | 6.5 High | Excellent | View Details |
| July best | 25°C / 18°C | 28°C / 20°C | 13days (128 mm) Wet | 9.9h Good | 85% Humid | 6.3 High | Excellent | View Details |
| August best | 25°C / 19°C | 28°C / 21°C | 16days (215 mm) Wet | 8.6h Good | 85% Humid | 5.7 High | Excellent | View Details |
| September best | 22°C / 15°C | 23°C / 16°C | 13days (134 mm) Wet | 8.6h Good | 82% Humid | 4.9 Moderate | Excellent | View Details |
| October | 15°C / 9°C | 13°C / 7°C | 15days (108 mm) Wet | 7.9h Good | 78% Humid | 3.4 Moderate | Fair | View Details |
| November | 8°C / 2°C | 5°C / -2°C | 16days (107 mm) Wet | 6.9h Fair | 77% Humid | 2.3 Moderate | Poor | View Details |
| December | 0°C / -5°C | -4°C / -10°C | 17days (73 mm) Wet | 6.1h Fair | 78% Humid | 1.9 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Sapporo 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 Sapporo, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Sapporo is August, with average daytime highs of 25°C (77°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Sapporo 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 Sapporo is August, averaging 215mm of precipitation across 16 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Sapporo runs through December, August, November, October, with the heaviest rainfall in December. Based on 10-year averages for Sapporo.
Sapporo receives approximately 102 sunshine hours per year. The sunniest month is May with around 10 hours. Based on climate data for Sapporo.
The least favorable months to visit Sapporo 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 Sapporo is 4, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Sapporo is 80%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes — sea temperatures in July, August, September average 24°C (75°F), which is warm and comfortable for swimming and water activities.
Yes, Sapporo receives snow. Months with snowfall average 15 snow days and 24 cm (9 in) of accumulation, with about 23 frost days during winter.
Average wind speeds in Sapporo are 15 km/h (9 mph). The windiest month is November with peak winds reaching 17 km/h (11 mph) (gusts up to 46 km/h / 29 mph).
Sapporo averages 1 clear-sky days per month with overall cloud cover around 67%. The clearest skies occur in May.
The annual average dew point in Sapporo is 5°C (41°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Sapporo has a Hot-Summer Continental climate, classified as Dfa under the Köppen system. Continental climates experience extreme temperature ranges — hot summers and cold, snowy winters.
The 'feels like' temperature in Sapporo ranges from 3°C (37°F) to 10°C (50°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Sapporo. It earns a climate score of 7.7/10 with Excellent.
For June in Sapporo, pack Umbrella, Waterproof jacket, Waterproof shoes, Sunscreen (SPF 30+), Sunglasses. With average highs of 20°C (69°F) and 14 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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