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Shirahama Onsen
Top 10 Must-Do Experiences and Attractions in Shirahama Onsen
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Shirahama Onsen Weather, Climate and Best Time to Visit
Data source：Meteostat
Update date：2025-09
Shirahama Onsen year round climate
- Spring (March–May): Average 9.9–18.2°C, mild climate but with relatively high rainfall, especially in April and May. Popular activities: Onsen bathing, coastal walks, appreciating Wakayama Prefecture's natural scenery. Recommended clothing: Light jacket, long-sleeved shirts and pants, rain gear.
- Summer (June–August): Average 22.6–28.5°C, hot and humid with relatively high rainfall. Popular activities: Beach activities, water sports, nighttime firework displays. Recommended clothing: Light and breathable clothing, sunscreen, rain gear.
- Autumn (September–November): Average 18.6–13.1°C, comfortable and pleasant climate with gradually decreasing rainfall. Popular activities: Onsen bathing, appreciating autumn leaves, enjoying local cuisine. Recommended clothing: Light jacket, long-sleeved shirts and pants.
- Winter (December–February): Average 6.5–5.5°C, cold and dry with the least rainfall. Popular activities: Onsen bathing, enjoying Ryokan facilities, appreciating winter seascapes. Recommended clothing: Warm jacket, sweaters, scarf, gloves.
Shirahama Onsen climatological average
Annual average temperature: approx. 16°C / Annual rainfall: approx. 1402 mm / Summer humidity: 70%–80% / Rainiest month: June
Shirahama Onsen monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
4.8°C
22.8
February
5.5°C
47.2
March
9.9°C
118.5
April
15.3°C
169.3
May
18.2°C
187.1
June
22.6°C
189.5
July
27.6°C
148.1
August
28.5°C
155.8
September
26.5°C
125.8
October
18.6°C
108.7
November
13.1°C
114.1
December
6.5°C
15.6
Shirahama Onsen weather for the next seven days
6/10
Wednesday
Sunny
23°C/15.7°C
6/11
Thursday
Patchy rain nearby
23.7°C/17.1°C
6/12
Friday
Patchy rain nearby
23.8°C/18.3°C
6/13
Saturday
Smoky haze
24.2°C/18.6°C
6/14
Sunday
Patchy rain nearby
23.7°C/19.7°C
6/15
Monday
Patchy rain nearby
23.3°C/19.3°C
6/16
Tuesday
Sunny
23.9°C/18.5°C
