Weather in Sapporo 🇯🇵
Monthly weather averages & travel planning
May
Avg Temp
16°C
Rain Days
13 days
Sun Hours
10 hrs
Humidity
65%
Asia › 🇯🇵 Japan › Sapporo
Updated: March 2026
Is May a Good Time to Visit Sapporo?
6/10
Good
May 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 2nd sunniest of the year in Sapporo. Culture-focused travellers and those who prefer lighter crowds will find May a practical choice, with prices running lower than peak April without sacrificing all the good weather. June 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.
vs April:9°C avg high
May sits at a particular moment in Sapporo's seasonal arc. Temperatures average 16°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.
16°C
61°F
Avg High
7°C
45°F
Avg Low
13 days
94 mm total
Rain Days
10h
per day avg
Sunshine
65%
Moderate
Humidity
Temperature in Sapporo in May
The 9°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. Wind averages 16 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 61°F average high, 45°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Temperature Trends
High
Low
Rainfall (mm)
0-20 mm21-50 mm51-100 mm100+ mm
What to Wear in Sapporo in May
Morning7°CBefore the day warms up
Afternoon16°CPeak daytime temperature
Evening10°CAfter sunset cools down
Packing for Sapporo in May means dressing for 16°C days and 7°C evenings. A mid-weight jacket over a sweater handles 16°C daytime temperatures; the combination stays comfortable all day without overheating. Evening temperatures settle at 7°C, a modest 9°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.
Events in Sapporo in May
May 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.
What to Pack for Sapporo in May
Based on 16°C average highs and 13 rainy days
- Light jacket or cardigan for cooler evenings
- Mix of short and long-sleeve layers
- Comfortable walking shoes with good arch support
- Compact folding umbrella
- Waterproof outer layer or packable rain jacket
- Quick-dry clothing that recovers fast after a shower
- Universal travel adapter
- Small day pack for city exploration
- Reusable water bottle
Best Activities in Sapporo in May
- Explore the old town's cobblestone backstreetsMorning (9-11am)At 16°C, conditions are pleasant for unhurried exploration on foot
- Visit hilltop viewpoints for panoramic city viewsLate afternoon (4-6pm)Low sun angle creates dramatic light for photography while temperatures remain comfortable
- Bicycle rental for a half-day city circuitMid-morning startMild 16°C temperatures are ideal for extended cycling without excessive effort
- Boat tour of the river, bay, or canal networkLate morning departureComfortable weather makes open-deck boats viable without wind-chill concerns
- Spend a morning in the national or city art museumOpens at 10am; arrive earlyWith 13 rain days expected, having a full-day indoor plan is practical insurance
- Cooking class focused on regional cuisineHalf-day sessions run 10am-1pm or 3-6pmIndoor activity that fills a rainy half-day with genuine cultural content
- Visit covered historical sites: cathedral, palace, or bazaarAny time; most crowded middayRoofed monuments and covered markets provide exploration without weather exposure
- Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningMay brings distinct seasonal changes to public green spaces worth exploring
- Try the seasonal farmer's market for local produce and street foodSaturday morning markets typically 8am-1pmMay seasonal produce is at peak availability, offering dishes not found at other times of year
Why is Sapporo mild in May?
Sapporo's May 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 16°C with high moisture in the air. Overnight temperatures remain elevated at 7°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.
Frequently Asked Questions
Sapporo in May
In May, Sapporo experiences average highs of 16°C (61°F) and lows of 7°C (45°F). Expect around 13 rainy days and 10 hours of sunshine per day, with humidity averaging 65%. The 9°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an extra jacket is essential for evenings. UV index averages 9, so sun protection is advisable on clear days.
Sapporo typically sees 13 rainy days in May, with total precipitation of around 94mm. Rain is moderate and manageable. Showers tend to pass quickly, and a light rain layer or foldable umbrella is sufficient protection for most days. For context, the driest month in Sapporo typically sees 4-6 fewer rain days than May.
Pack a warm jacket, sweaters, and layering pieces for Sapporo in May. Temperatures can drop to 7°C at night, so thermal underlayers are advisable for evening outings. Waterproof footwear is important with 13 rainy days expected. A scarf, hat, and gloves handle the windchill on clear cold days, which often feel colder than the thermometer reads.
May is a reasonable time to visit Sapporo. Expect 13 rainy days, so pack a light rain layer for flexibility. Average temperatures of 16°C make outdoor exploration comfortable during the dry periods. With 10 daily sunshine hours, there are reliable windows of good weather to plan outdoor activities around, even if the month is not the driest on the calendar.
The average high temperature in Sapporo in May is 16°C (61°F), and the average low is 7°C (45°F). The mean daily temperature is approximately 12°C (53°F). The day-to-night range of 9°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Sapporo is generally February. February offers the most sunshine at 8 hours per day and only 10 rainy days. Average temperatures reach -2°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around February gives you the best chance of dry, bright weather.
May is shoulder or low season in Sapporo, meaning fewer tourists and generally lower prices than peak months. With 10 sunshine hours and 13 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In May, Sapporo suits a range of activities thanks to cool conditions around 16°C. Mix of indoor and outdoor activities works well given the moderate chance of rain. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 10 hours of sunshine, parks and waterfront walks are particularly enjoyable.
May ranks 2nd 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 4°C into June. Compared to last month (April: 9°C high, 12 rain days), May is warmer and wetter. May is among the top three sunniest months to visit Sapporo.
Year-Round Climate
| 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
-3°-9°
February
10 rain days, 8h sun
-2°-9°
March
12 rain days, 9h sun
2°-5°
April
12 rain days, 10h sun
9°1°
May
13 rain days, 10h sun
16°7°
June
13 rain days, 10h sun
20°12°
July
15 rain days, 10h sun
23°17°
August
15 rain days, 9h sun
24°18°
September
14 rain days, 8h sun
21°14°
October
14 rain days, 8h sun
15°8°
November
14 rain days, 7h sun
7°1°
December
14 rain days, 7h sun
0°-6°
Other Months in Sapporo
Plan Your Trip to Sapporo
Data Sources for Sapporo
Climate normals represent 30-year averages (1991-2020). Individual years may vary.