Monthly weather averages & travel planning

Asia › 🇯🇵 Japan › Sapporo
Updated: March 2026
June is a good time to visit Sapporo (6/10). With 10 daily sunshine hours and only 13 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 3rd sunniest of the year in Sapporo. Culture-focused travellers and those who prefer lighter crowds will find June a practical choice, with prices running lower than peak April without sacrificing all the good weather. July offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Sapporo's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.
June sits at a particular moment in Sapporo's seasonal arc. Temperatures average 20°C during the day, placing this month in a comfortable middle band, noticeably warmer than the depths of winter but without midsummer extremes. Against the seasonal backdrop, 13 rainy days and 10 sunshine hours per day help calibrate expectations for what actually awaits on the ground.
20°C
68°F
Avg High
12°C
54°F
Avg Low
13 days
90 mm total
Rain Days
10h
per day avg
Sunshine
65%
Moderate
Humidity
The 8°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 65%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 9 this month, classed as high to very high. SPF 30+ sunscreen, a brim hat, and sunglasses are not optional between 10am and 4pm. Winds are calm at an average 14 km/h, so wind-chill is not a factor in planning your clothing. In Fahrenheit: 68°F average high, 54°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Sapporo in June means dressing for 20°C days and 12°C evenings. A light cotton tee with a casual overshirt works well at 20°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 12°C, a modest 8°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. With 13 rain days expected, a compact travel umbrella is worth the bag space. A waterproof jacket is better than an umbrella if you plan full-day outdoor routes.
Local tip: Temple and religious site visits require covered shoulders and knees in most of Sapporo's heritage areas. A lightweight scarf or sarong weighs almost nothing and solves the problem instantly.
June has no major festivals or public holidays in Sapporo, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
Based on 20°C average highs and 13 rainy days
Sapporo's June heat is driven by the Asian summer monsoon system, as the low-pressure cell that forms over the heated landmass draws warm, humid air from the oceans. The result is temperatures averaging 20°C with high moisture in the air. Overnight temperatures remain elevated at 12°C, as clouds and humidity prevent the earth from radiating heat away after sunset. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Sapporo in June
June ranks 3rd sunniest of the year in Sapporo, with an average 10 daily sunshine hours. The driest months are February, January, and March. August is the hottest month (24°C avg high); January is the coolest (-3°C). From here, temperatures rise 3°C into July. Compared to last month (May: 16°C high, 13 rain days), June is warmer and equally dry. June is among the top three sunniest months to visit Sapporo.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | -3°C | -9°C | 11 | 7h | View |
| February | -2°C | -9°C | 10 | 8h | View |
| March | 2°C | -5°C | 12 | 9h | View |
| April | 9°C | 1°C | 12 | 10h | View |
| May | 16°C | 7°C | 13 | 10h | View |
| June | 20°C | 12°C | 13 | 10h | View |
| July | 23°C | 17°C | 15 | 10h | View |
| August | 24°C | 18°C | 15 | 9h | View |
| September | 21°C | 14°C | 14 | 8h | View |
| October | 15°C | 8°C | 14 | 8h | View |
| November | 7°C | 1°C | 14 | 7h | View |
| December | 0°C | -6°C | 14 | 7h | View |
January
11 rain days, 7h sun
February
10 rain days, 8h sun
March
12 rain days, 9h sun
April
12 rain days, 10h sun
May
13 rain days, 10h sun
June
13 rain days, 10h sun
July
15 rain days, 10h sun
August
15 rain days, 9h sun
September
14 rain days, 8h sun
October
14 rain days, 8h sun
November
14 rain days, 7h sun
December
14 rain days, 7h sun
Data Sources for Sapporo
Climate normals represent 30-year averages (1991-2020). Individual years may vary.