Japan Hakodate Weather in June — Climate Guide
June in Hakodate is very good
Hakodate Weather in June — Quick Answer
As of 2026- Avg temp
- 20° / 13°
- Rainfall
- 80mm · 10 days
- Crowds
- Moderate
As of 2026, Hakodate in June averages a high of 20°C and low of 13°C with 80mm of rain over about 10 days. Light spring layers — t-shirt + light cardigan combination. Evenings cool at 13°C / 55°F — bring fleece or sweater. Compact umbrella + light rain shell for the Hakodate rainy stretch. Hokkaido summer transition: humidity rises but stays below Tokyo levels.
June is very good for Hakodate.
June is Hakodate's transition into summer + the canonical Hakodate Marathon month. The first Sunday of June draws 18,000-25,000 runners across full + half marathon + 10K distances along the Bay Area + Motomachi + Yunokawa coastal road — Hokkaido's second-largest marathon. Daytime averages 20°C / 13°C — pleasant spring-to-summer with light humidity (78% vs Tokyo's 85% summer average).
Onuma National Park's flat 12 km lake offers the canonical summer day-trip from Hakodate — cycling around the lake $10-18 half-day rental, canoe + rowboat $15-25 for 1 hour. The Mt. Komagatake reflection + lake + cherry-tree green leaves combination is the canonical Onuma summer photo. Lavender season opens late June (the canonical Hokkaido summer flower with peak through July). The Asaichi morning market's summer uni + scallop peak begins — the year's peak quality + lowest prices for the canonical Hakodate breakfast.
Travel score
Hakodate Marathon + Onuma cycling + Mt. Hakodate most reliable — Hokkaido's quiet spring climax
June Weather at a Glance
June averages 68°F / 20°C highs and 55°F / 13°C lows. Pacific coastal Hakodate warms but humidity stays moderate (78% vs Tokyo 85%). Rainfall continues at 80mm. Sunrise 3:55 AM, sunset 7:15 PM — 15h 20min daylight near solstice.
June Travel Advice
Hakodate Marathon weekend (first Sunday of June) requires hotel booking 2-3 months ahead. Mt. Hakodate cable car is at year's most reliable — perfect for travelers wanting guaranteed night view. Onuma cycling weekday preferred to weekend crowds.
Flying In from Overseas
Quiet international tourism between cherry season and summer peak — flights from Seoul (2.5h) $350-600, Hong Kong (4.5h) $450-750, Sydney (10h via Tokyo) $700-1,100.
June Pricing Trends
Business hotels $80-130/night, La Vista Hakodate Bay $160-240/night, Yunokawa Wakamatsu $350-500/night. Marathon weekend +20-40% hotel surge. USD 1 ≈ JPY 148.
Hakodate June Weather Stats
Avg High
20°C
Avg Low
13°C
Rainy Days
10
80mm total
Sunshine
6h
Daily avg
Humidity
78%
comfortable
UV Index
6
High
Wind
11 km/h
Gusts 22
Sea Temp
14°C
too cold for swimming
Crowds
Moderate
At attractions
June Sunrise & Sunset
Air Quality
PM2.5
21 μg/m³
PM10
34 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
20°C
Nighttime
13°C
Humidity and wind affect how the actual temperature feels.
Wind
11 km/h
Max gust 22 km/h
Activities Recommended for June
June Travel Pros & Cons
Pros
- Hakodate Marathon first Sunday of June (18,000-25,000 runners, free spectator viewing)
- Onuma National Park lavender + cycling peak
- Mt. Hakodate cable car cancellation rate at year's lowest (5-8%)
- Asaichi market summer uni + scallop peak quality
Cons
- Hakodate Marathon weekend sees city-wide hotel surge (book 2-3 months ahead)
- 80mm rainfall continues with 10 rainy days
- Humidity rises to 78% — start of muggy season
- Onuma weekday cycling preferred to weekend crowds
June Events & Festivals
- Hakodate Marathon (typically first Sunday of June, 18,000-25,000 runners)
- Onuma National Park lavender peak (late June through July)
- Hakodate Snow Festival 100-day countdown begins late June
Hakodate in June — Full Picture
June is Hakodate's transition into summer + the canonical Hakodate Marathon month. The first Sunday of June draws 18,000-25,000 runners across full + half marathon + 10K distances along the Bay Area + Motomachi + Yunokawa coastal road — Hokkaido's second-largest marathon. Daytime averages 20°C / 13°C — pleasant spring-to-summer with light humidity (78% vs Tokyo's 85% summer average).
Onuma National Park's flat 12 km lake offers the canonical summer day-trip from Hakodate — cycling around the lake $10-18 half-day rental, canoe + rowboat $15-25 for 1 hour. The Mt. Komagatake reflection + lake + cherry-tree green leaves combination is the canonical Onuma summer photo. Lavender season opens late June (the canonical Hokkaido summer flower with peak through July). The Asaichi morning market's summer uni + scallop peak begins — the year's peak quality + lowest prices for the canonical Hakodate breakfast.
Hotel pricing returns to mid-range levels after the May cherry peak — La Vista Hakodate Bay drops to $160-240 (vs the cherry peak $260-450). Yunokawa Wakamatsu drops to $350-500. Mt. Hakodate cable car cancellation rate is at the year's lowest at 5-8% — most reliable night view month. The Pacific coastal humidity is the lowest of any major Japanese city in June.
What to Wear & What to Pack
Light spring layers — t-shirt + light cardigan combination. Evenings cool at 13°C / 55°F — bring fleece or sweater. Compact umbrella + light rain shell for the Hakodate rainy stretch. Hokkaido summer transition: humidity rises but stays below Tokyo levels.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
11.3°C
2.7°C
9.3/mo
Summer (Jun·Jul·Aug)
Current23°C
17°C
10.7/mo
Autumn (Sep·Oct·Nov)
15.3°C
8°C
10.3/mo
Winter (Dec·Jan·Feb)
1.3°C
-5.7°C
7.7/mo
Hakodate Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 0° | -7° | 8d·70mm | 4h | 70% | 1 | Quiet | Low season | |
| 1° | -7° | 7d·60mm | 5h | 68% | 2 | Moderate | Shoulder | |
| 5° | -3° | 9d·65mm | 6h | 67% | 3 | Quiet | Low season | |
| 12° | 3° | 10d·80mm | 6h | 67% | 4 | Busy | Peak | |
| May (Best) | 17° | 8° | 9d·90mm | 7h | 70% | 5 | Very busy | Peak |
| June (Best) | 20° | 13° | 10d·80mm | 6h | 78% | 6 | Moderate | Shoulder |
| July (Best) | 23° | 18° | 11d·130mm | 5h | 80% | 7 | Busy | Peak |
| August (Best) | 26° | 20° | 11d·140mm | 6h | 80% | 7 | Very busy | Peak |
| September (Best) | 21° | 14° | 11d·130mm | 5h | 78% | 5 | Moderate | Shoulder |
| October (Best) | 16° | 8° | 10d·100mm | 5h | 73% | 3 | Busy | Peak |
| 9° | 2° | 10d·100mm | 4h | 70% | 2 | Quiet | Low season | |
| 3° | -3° | 8d·80mm | 4h | 70% | 1 | Busy | Peak |
View Other Months
Hakodate June Hotel Picks
Frequently Asked Questions
Is June a good time to visit Hakodate?
Hakodate in June is very good. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Hakodate in June?
Hakodate June averages a high of 20°C and a low of 13°C.
Does it rain much in Hakodate in June?
Hakodate June averages 80mm of rainfall over about 10 rainy days.
What should I wear in Hakodate in June?
Light spring layers — t-shirt + light cardigan combination. Evenings cool at 13°C / 55°F — bring fleece or sweater. Compact umbrella + light rain shell for the Hakodate rainy stretch. Hokkaido summer transition: humidity rises but stays below Tokyo levels.
What time are sunrise and sunset in Hakodate in June?
Hakodate June sunrise is 03:55 and sunset is 19:15, with 15h 20min of daylight.
What's the air quality like in Hakodate in June?
Hakodate June air quality (AQI) averages 45, rated Good. PM2.5 averages 21μg/m³.
What activities are recommended in Hakodate in June?
In June, Hakodate is great for Hakodate Marathon spectator viewing, Onuma National Park cycling + lavender, Mt. Hakodate night view (year's most reliable).
Is June peak season in Hakodate?
Hakodate June crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Hakodate
View Other Months
Planning a June trip to Hakodate?
You've checked the weather — next come the budget and the route.
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.