It started raining heavily before we even left Naha. The high-speed ferry ride took 40 days to reach the island. Thankfully, the rain wasn't too bad once we arrived, but it was very cold. Even though it was cloudy, you could still see the gradient colors of the sea. Next time, I want to come back for snorkeling and an overnight stay to experience the island's tranquility and play with the island's cats. On our way back to Okinawa's main island, we saw sea snakes, corals, and tropical fish at the harbor – probably the cleanest harbor I've ever seen. The Taiwanese staff who greeted us on the island were very kind.
Anonymous User
Solo traveler
Agia Island Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Agia Island year round climate
Spring (March–May): Average 20.1–24.3°C, warm and humid climate, relatively high rainfall, especially abundant in April. Common activities: Diving, snorkeling, beach activities. Recommended clothing: Light and breathable clothing, rain gear.
Summer (June–August): Average 27.0–29.8°C, hot and humid, relatively high rainfall, August being the rainiest month. Common activities: Water activities, swimming, sunbathing. Recommended clothing: Light short sleeves, shorts, swimwear, sun hat, sunscreen.
Autumn (September–November): Average 23.6–28.6°C, comfortable climate, reduced rainfall. Common activities: Diving, snorkeling, beach activities, sightseeing. Recommended clothing: Light and breathable clothing, light jacket.
Winter (December–February): Average 17.9–19.2°C, mild climate, moderate rainfall. Common activities: Diving, snorkeling, enjoying the island atmosphere. Recommended clothing: Light long-sleeved clothing, light jacket.
Agia Island climatological average
Annual average temperature: approx. 24.1°C / Annual rainfall: approx. 2246 mm / Summer humidity: 75%–85% / Rainiest month: August
Agia Island monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
17.9°C
60.1
February
18.9°C
60
March
20.1°C
165.9
April
23.1°C
217.6
May
24.3°C
229.4
June
27°C
318.7
July
29.8°C
129.7
August
29.5°C
342.2
September
28.6°C
165.8
October
26.7°C
149.1
November
23.6°C
155.3
December
19.2°C
252.6
Agia Island weather for the next seven days
3/30
Monday
Patchy rain nearby
23.7°C/21.2°C
3/31
Tuesday
Patchy rain nearby
23.9°C/21.6°C
4/1
Wednesday
Moderate rain
24°C/19.1°C
4/2
Thursday
Partly Cloudy
21.4°C/18.7°C
4/3
Friday
Patchy rain nearby
22°C/18.7°C
4/4
Saturday
Patchy rain nearby
22.7°C/19.5°C
4/5
Sunday
Patchy rain nearby
21.8°C/18.4°C
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