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Amakusa

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Best time to visit Amakusa

Data source：Meteostat
Last updated：2025-09

Weather in Amakusa throughout the year

  • Spring (March–May): Average 13.8–20.4°C, mild and comfortable climate, but with relatively high rainfall; it is recommended to carry an umbrella at all times. Common activities: flower viewing, coastal walks. Recommended attire: light jacket, long-sleeved shirt, comfortable walking shoes.
  • Summer (June–August): Average 23.7–28.9°C, hot and humid, with rainfall concentrated in June. Common activities: swimming, water sports. Recommended attire: light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): Average 21.6–17.1°C, pleasant climate with reduced rainfall. Common activities: outdoor hiking, viewing autumn leaves (in some areas). Recommended attire: comfortable long-sleeved clothing, light jacket.
  • Winter (December–February): Average 9.2–10.2°C, lower temperatures with little rainfall. Common activities: onsen (hot spring) bathing, indoor activities. Recommended attire: warm jacket, sweater, scarf.

Weather in Amakusa

Annual average temperature: approx. 18.7°C / Annual rainfall: approx. 2125 mm / Summer humidity: 70%–80% / Rainiest month: June

Amakusa weather by month

Month
Temperature (°C)
Rainfall (mm)
January
9.2°C
110.9
February
10.2°C
102.1
March
13.8°C
203.6
April
17.7°C
253.8
May
20.4°C
233.4
June
23.7°C
393.9
July
28.2°C
227
August
28.9°C
141.8
September
27.4°C
144.3
October
21.6°C
116.8
November
17.1°C
127.1
December
10.1°C
70.7

7-day weather forecast for Amakusa

11/16
Monday
Overcast
19.6°C/16.5°C
11/17
Tuesday
Patchy rain nearby
17.4°C/16.2°C
11/18
Wednesday
Patchy rain nearby
18.2°C/14.5°C
11/19
Thursday
Light rain shower
14.4°C/11.4°C
11/20
Friday
Patchy rain nearby
11.7°C/9.6°C
11/21
Saturday
Patchy rain nearby
13.5°C/11.8°C
11/22
Sunday
Sunny
13.8°C/11.7°C

Amakusa travel FAQs and useful info

Is Amakusa worth visiting?

Absolutely. While rich in history, the natural beauty of Amakusa alone makes it a worthwhile destination. Expect lush greenery, pristine blue waters, and remarkable geological formations that have earned Amakusa Geopark designation.

What is the meaning of the name Amakusa?

The name 'Amakusa' (天草) translates to 'Heaven's Grass' or 'Heavenly Grass' in Japanese. This archipelago, situated off the west coast of Kyushu, is renowned for its profound history as a sanctuary for 'hidden Christians' and its breathtaking natural landscapes.

What happened to Amakusa Shirō?

Amakusa Shirō was tragically executed after the castle he defended was overrun. His head was later displayed on a pike in Nagasaki as a stark warning to potential Christian rebels.

Is it safe to swim in Amakusa?

Yes, swimming in Amakusa is generally safe and enjoyable. Many beaches are situated in shallow bays with calm waves, making them ideal for families with young children. Beyond swimming, you can also enjoy activities like BBQ.

What are Amakusa's main attractions?

Amakusa is celebrated for its stunning natural landscapes, including its designation as a national Geopark, and its significant historical ties to Japan's hidden Christians. Visitors can explore beautiful beaches, unique geological sites, and remnants of its rich past.