When to go to Ishigaki, by the numbers
- Months with average highs between 15°C and 25°C and fewer than 10 wet days: February and March.
- Fewest wet days: June (8.4 days).
- Quietest hotels in 2025 (Okinawa Prefecture): December (51.9%), January (52.5%) and May (56.2%).
- Busiest hotels in 2025 (Okinawa Prefecture): October (66.6%), August (66.4%) and July (64.4%).
- Plum blossom: around 11 January on average.
- Cherry blossom: around 18 January on average.
What to wear on Ishigaki, month by month
| Month | Level | Average high | Wet days |
|---|---|---|---|
| January | Mild | 21.5°C | 12.3 days |
| February | Mild | 22.0°C | 9.8 days |
| March | Mild | 23.7°C | 9.7 days |
| April | Warm | 26.0°C | 8.8 days |
| May | Warm | 28.7°C | 9.2 days |
| June | Hot | 30.9°C | 8.4 days |
| July | Hot | 32.2°C | 8.6 days |
| August | Hot | 32.0°C | 11.6 days |
| September | Hot | 31.0°C | 11.3 days |
| October | Warm | 28.8°C | 10.8 days |
| November | Warm | 26.2°C | 10.8 days |
| December | Mild | 23.0°C | 12.3 days |
How busy Ishigaki is, month by month
- Jan52.5%
- Feb62.1%
- Mar59.6%
- Apr60.5%
- May56.2%
- Jun58.8%
- Jul64.4%
- Aug66.4%
- Sep62.6%
- Oct66.6%
- Nov61.3%
- Dec51.9%
Frequently asked questions
When is the best time to visit Ishigaki?
Months with average highs between 15°C and 25°C and fewer than 10 wet days: February and March. Fewest wet days: June (8.4 days).
What is the hottest month on Ishigaki?
July has the highest average high, 32.2°C (90°F). January has the lowest, 21.5°C (71°F) (JMA, 1991–2020).
What is the rainiest month on Ishigaki?
September has the most precipitation (259.7 mm), and January has the most wet days (12.3 days) (JMA, 1991–2020).
Ishigaki weather month by month
Averages for 1991–2020 at the JMA's Ishigakijima station (6 m above sea level). Months with their own page are linked; the others follow.
| Month | High | Low | Precipitation | Wet days | Sunshine |
|---|---|---|---|---|---|
| January | 21.5°C | 16.7°C | 135.0 mm | 12.3 days | 85 hours |
| February | 22.0°C | 17.2°C | 124.0 mm | 9.8 days | 91 hours |
| March | 23.7°C | 18.6°C | 134.4 mm | 9.7 days | 118 hours |
| April | 26.0°C | 21.3°C | 146.9 mm | 8.8 days | 130 hours |
| May | 28.7°C | 23.9°C | 190.7 mm | 9.2 days | 164 hours |
| June | 30.9°C | 26.6°C | 208.2 mm | 8.4 days | 213 hours |
| July | 32.2°C | 27.7°C | 142.3 mm | 8.6 days | 261 hours |
| August | 32.0°C | 27.3°C | 249.8 mm | 11.6 days | 233 hours |
| September | 31.0°C | 26.0°C | 259.7 mm | 11.3 days | 190 hours |
| October | 28.8°C | 23.9°C | 211.2 mm | 10.8 days | 158 hours |
| November | 26.2°C | 21.5°C | 138.1 mm | 10.8 days | 115 hours |
| December | 23.0°C | 18.4°C | 155.2 mm | 12.3 days | 89 hours |
- Jan21.5°C
- Feb22.0°C
- Mar23.7°C
- Apr26.0°C
- May28.7°C
- Jun30.9°C
- Jul32.2°C
- Aug32.0°C
- Sep31.0°C
- Oct28.8°C
- Nov26.2°C
- Dec23.0°C
Events on Ishigaki through the year
| Event | Month | When |
|---|---|---|
| Ishigaki Island Marathon (24th)石垣島マラソン | Jan | Mid-January (17 January in 2027) Official page |
| Maruza Festival (22nd)まるざーフェスティバル | Jan | Late January (2026: Sunday 25 January, 9:00-17:00) Official page |
| Chiba Lotte Marines Spring Camp in Ishigaki千葉ロッテマリーンズ春季キャンプ | Feb | February (about 20 days) Official page |
| Ishigaki Island Triathlon石垣島トライアスロン大会 | Apr | Mid-April (18 April in 2027) Official page |
| Ishigaki Island SUP Grand Prix (9th)石垣島SUPグランプリ大会 | Apr | Late April (25 April in 2026) Official page |
| Ishigaki Island Festival (62nd)石垣島まつり | Nov | Early November (7 and 8 November in 2026) Official page |
| Ishigaki Island Hula Festival 2026石垣島フラフェスティバル2026 | Nov | 14 November Official page |
| Yukiya Arashiro Cycling Event 2026新城幸也サイクリングイベント2026 | Nov | Late November (29 November in 2026) Official page |
| Yaeyama Mainichi Ekiden八重山毎日駅伝大会 | Dec | December Official page |
Sources for this page
Show all 13
- Normals for 1991–2020: Ishigakijima (石垣島), month by month (平年値 年・月ごとの値)Japan Meteorological Agency (JMA)
- Normals for 1991–2020: Ishigakijima (石垣島), rain days, temperature days and snow (詳細)Japan Meteorological Agency (JMA)
- Overnight Travel Statistics Survey, 2025 final figures (宿泊旅行統計調査 2025年 年の確定値)Japan Tourism Agency
- Biological season observations (生物季節観測の情報)Japan Meteorological Agency (JMA)
- Yearly records of flowering and leaf colour since 1953 (生物季節観測累年値)Japan Meteorological Agency (JMA)
- Ishigaki Island Marathon (24th) (石垣島マラソン)Ishigaki Island Marathon Executive Committee
- Maruza Festival (22nd) (まるざーフェスティバル)Ishigaki City
- Chiba Lotte Marines Spring Camp in Ishigaki (千葉ロッテマリーンズ春季キャンプ)Ishigaki City Tourism and Exchange Association
- Ishigaki Island Triathlon (石垣島トライアスロン大会)Ishigaki Island Triathlon organizing committee
- Ishigaki Island SUP Grand Prix (9th) (石垣島SUPグランプリ大会)Okinawa Convention & Visitors Bureau (Okinawa Story)
- Ishigaki Island Festival (62nd) (石垣島まつり)Ishigaki City
- Ishigaki Island Hula Festival 2026 (石垣島フラフェスティバル2026)Ishigaki Island Hula Festival Executive Committee
- Yukiya Arashiro Cycling Event 2026 (新城幸也サイクリングイベント2026)Okinawa Convention & Visitors Bureau (Okinawa Story)