Our lovely tour guide provided detailed and enthusiastic commentary in Japanese throughout the journey. She checked the return time with the driver before we got off the bus, and when it was time to board, she and the driver waited for us at the door, even leading us in a song! 😄
When I woke up in the morning it was raining, and the rain stopped when I got to the meeting place, but the clouds were thick and the weather forecast was cloudy with occasional rain, so I was feeling down. However, when I went into the sea, I was pleasantly surprised in the best way possible. The water was incredibly clear, and it was the first time I had ever seen coral reefs and schools of fish so close up. I had seen pictures on TV and YouTube, but seeing it in person made me think, "I'm so glad I came." The tour guides were true professionals; they took us to three different snorkeling spots, and each of the three had its own unique characteristics, which made it very satisfying. It was honestly quite cold on the boat because of the cloudy weather, but the tour guides were very considerate, asking things like, "Would you like a warm drink?", "Would you like a hot shower?", and "We have ponchos, would you like to wear?", which I really appreciated.
A truly worthwhile experience! The boat trip also allows you to enjoy the vast, unobstructed sea view – it's absolutely beautiful!
Anonymous User
Solo traveler
Irabu Island Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Irabu Island year round climate
Spring (March–May): Average 70–77°F, warm and comfortable, but with more rainfall in May. Common activities: Diving, snorkeling, beach activities. Recommended clothing: Light and breathable clothing, rain gear.
Summer (June–August): Average 82–86°F, hot and humid, occasional afternoon thunderstorms. Common activities: Water sports, seaside leisure, stargazing. Recommended clothing: Light short sleeves, shorts, swimwear, sun protection clothing.
Autumn (September–November): Average 80–82°F, comfortable and pleasant, more rainfall, especially in September. Common activities: Diving, snorkeling, sightseeing. Recommended clothing: Light and breathable clothing, rain gear.
Winter (December–February): Average 66–68°F, warm and comfortable, less rainfall. Common activities: Diving, snorkeling, bird watching. Recommended clothing: Light long-sleeved clothing, light jacket.
Irabu Island climatological average
Annual average temperature: approx. 76.5°F / Annual rainfall: approx. 2046 mm / Summer humidity: 75%–85% / Rainiest month: May
Irabu Island monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
66.4°F
95.1
February
67.8°F
92.5
March
70.2°F
92.6
April
74.8°F
139.3
May
77.4°F
348.7
June
82.6°F
204.6
July
86°F
83.1
August
84.4°F
232.1
September
82.8°F
290.8
October
80.1°F
152
November
75.7°F
172.1
December
68.5°F
143.4
Irabu Island weather for the next seven days
6/10
Wednesday
Heavy rain
77.9°F/76.7°F
6/11
Thursday
Moderate rain
78.1°F/76.4°F
6/12
Friday
Moderate rain
76.5°F/75.7°F
6/13
Saturday
Patchy rain nearby
77.9°F/75.8°F
6/14
Sunday
Moderate rain
81°F/78.4°F
6/15
Monday
Patchy rain nearby
80.2°F/78.8°F
6/16
Tuesday
Patchy rain nearby
80.5°F/79.1°F
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