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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 49–64°F, 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 72–83°F, 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 65–55°F, 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 43–41°F, 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. 60.8°F / Annual rainfall: approx. 1402 mm / Summer humidity: 70%–80% / Rainiest month: June

Shirahama Onsen monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
40.6°F
22.8
February
41.9°F
47.2
March
49.8°F
118.5
April
59.5°F
169.3
May
64.8°F
187.1
June
72.7°F
189.5
July
81.7°F
148.1
August
83.3°F
155.8
September
79.7°F
125.8
October
65.5°F
108.7
November
55.6°F
114.1
December
43.7°F
15.6

Shirahama Onsen weather for the next seven days

12/10
Wednesday
Partly Cloudy
52.5°F/43.8°F
12/11
Thursday
Cloudy
56.2°F/47.6°F
12/12
Friday
Patchy rain nearby
44.5°F/38.3°F
12/13
Saturday
Partly Cloudy
46.5°F/37.2°F
12/14
Sunday
Patchy rain nearby
48.8°F/41.2°F
12/15
Monday
Patchy rain nearby
48.3°F/42°F
12/16
Tuesday
Sunny
47.9°F/38.8°F

Shirahama Onsen Frequently Asked Questions and Useful Information for Travel

What is the best time to visit?

The climate of Shirahama Onsen is pleasant all year round. Summer is suitable for playing in the water and winter is suitable for bathing.

Which attractions are must-sees?

Must-visit attractions in Shirahama Onsen include the open-air hot spring Saki no Yu, Shirahama Beach, sunset on Engetsu Island, and the spectacular three-story wall.