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Irabu Bridge stretching across turquoise sea between Irabu Island and Miyakojima, Okinawa

Photo: Irabu ohashi 20120815.jpg by Rsa (CC BY-SA 3.0, cropped), via Wikimedia Commons.

Miyakojima weather by month: temperature, rain and what to wear

Miyakojima's average high runs from 20.6°C (69°F) in January to 31.7°C (89°F) in July (JMA, 1991–2020). The wettest month is September (259.3 mm) and the driest is February (119.8 mm).

When to go to Miyakojima, by the numbers

  • No month has average highs between 15°C and 25°C with fewer than 10 wet days.
  • Fewest wet days: July (9.3 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%).
  • Cherry blossom: around 17 January on average.

What to wear on Miyakojima, month by month

Miyakojima: our clothing level for each month (from the JMA's averages)
MonthLevelAverage highWet days
JanuaryMild20.6°C12.3 days
FebruaryMild21.1°C10.8 days
MarchMild22.8°C10.9 days
AprilWarm25.1°C9.9 days
MayWarm27.7°C10.7 days
JuneHot30.3°C9.8 days
JulyHot31.7°C9.3 days
AugustHot31.3°C12.2 days
SeptemberHot30.1°C11.2 days
OctoberWarm27.8°C10.0 days
NovemberWarm25.3°C10.9 days
DecemberMild22.2°C11.9 days

How busy Miyakojima is, month by month

How full hotels across Okinawa Prefecture were, month by month in 2025 (%)

Average room occupancy for all hotels and inns (Japan Tourism Agency).

  1. Jan52.5%
  2. Feb62.1%
  3. Mar59.6%
  4. Apr60.5%
  5. May56.2%
  6. Jun58.8%
  7. Jul64.4%
  8. Aug66.4%
  9. Sep62.6%
  10. Oct66.6%
  11. Nov61.3%
  12. Dec51.9%

Frequently asked questions

When is the best time to visit Miyakojima?

No month has average highs between 15°C and 25°C with fewer than 10 wet days. Fewest wet days: July (9.3 days).

What is the hottest month on Miyakojima?

July has the highest average high, 31.7°C (89°F). January has the lowest, 20.6°C (69°F) (JMA, 1991–2020).

What is the rainiest month on Miyakojima?

September has the most precipitation (259.3 mm), and January has the most wet days (12.3 days) (JMA, 1991–2020).

Miyakojima weather month by month

Averages for 1991–2020 at the JMA's Miyakojima station (38 m above sea level). Months with their own page are linked; the others follow.

Miyakojima by month: averages for 1991–2020 (JMA)
MonthHighLowPrecipitationWet daysSunshine
January20.6°C16.3°C138.8 mm12.3 days86 hours
February21.1°C16.6°C119.8 mm10.8 days90 hours
March22.8°C17.9°C138.7 mm10.9 days116 hours
April25.1°C20.4°C148.7 mm9.9 days123 hours
May27.7°C23.0°C222.3 mm10.7 days149 hours
June30.3°C25.7°C194.7 mm9.8 days192 hours
July31.7°C26.8°C151.6 mm9.3 days241 hours
August31.3°C26.5°C257.4 mm12.2 days211 hours
September30.1°C25.6°C259.3 mm11.2 days179 hours
October27.8°C23.8°C157.9 mm10.0 days152 hours
November25.3°C21.3°C139.8 mm10.9 days112 hours
December22.2°C18.2°C147.2 mm11.9 days93 hours
Average high on Miyakojima, month by month (°C)
  1. Jan20.6°C
  2. Feb21.1°C
  3. Mar22.8°C
  4. Apr25.1°C
  5. May27.7°C
  6. Jun30.3°C
  7. Jul31.7°C
  8. Aug31.3°C
  9. Sep30.1°C
  10. Oct27.8°C
  11. Nov25.3°C
  12. Dec22.2°C

Events on Miyakojima through the year

Events on Miyakojima: dates from each organizer's official page
EventMonthWhen
Miyakojima University Ekiden Wide-Zumi 2027宮古島大学駅伝 ワイドー・ズミ2027Feb14 February (2027 edition) Official page
Miyako Island Sea Opening (48th)サンゴの楽園未来まで集まれ遊ぼう宮古島の海びらきAprEarly April (5 April in 2026) Official page
All Japan Triathlon Miyakojima (41st)全日本トライアスロン宮古島大会AprLate April (25 April in 2027) Official page
Kuicha Festival (25th)クイチャーフェスティバルNovEarly November (1 November in 2026) Official page
Miyakojima City 17END Half Marathon in Irabu Island (5th)宮古島市17ENDハーフマラソンin伊良部島大会NovEarly November (8 November in 2026) Official page
Ocean Fun Fest 2026 MiyakojimaOcean Fun Fest 2026 宮古島 〜ビーチスポーツの祭り〜Dec12 to 13 December Official page

Related items

Miyakojima in JanuaryMildLong sleeves, or a T-shirt and a light jacket.High20.6°CLow16.3°CPrecipitation138.8 mmWet days12.3 daysMiyakojima in FebruaryMildLong sleeves, or a T-shirt and a light jacket.High21.1°CLow16.6°CPrecipitation119.8 mmWet days10.8 daysMiyakojima in MarchMildLong sleeves, or a T-shirt and a light jacket.High22.8°CLow17.9°CPrecipitation138.7 mmWet days10.9 daysMiyakojima in AprilWarmShort or thin long sleeves, plus a light layer.High25.1°CLow20.4°CPrecipitation148.7 mmWet days9.9 days

Back to Japan by month

Read more

Sources for this page

  1. Normals for 1991–2020: Miyakojima (宮古島), month by month (平年値 年・月ごとの値)Japan Meteorological Agency (JMA)
  2. Normals for 1991–2020: Miyakojima (宮古島), rain days, temperature days and snow (詳細)Japan Meteorological Agency (JMA)
  3. 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
  4. Biological season observations (生物季節観測の情報)Japan Meteorological Agency (JMA)
  5. Yearly records of flowering and leaf colour since 1953 (生物季節観測累年値)Japan Meteorological Agency (JMA)
  6. Miyakojima University Ekiden Wide-Zumi 2027 (宮古島大学駅伝 ワイドー・ズミ2027)Okinawa Convention & Visitors Bureau (Okinawa Story)
  7. Miyako Island Sea Opening (48th) (サンゴの楽園未来まで集まれ遊ぼう宮古島の海びらき)Miyakojima Tourism Association
  8. All Japan Triathlon Miyakojima (41st) (全日本トライアスロン宮古島大会)Miyakojima Triathlon Executive Committee
  9. Kuicha Festival (25th) (クイチャーフェスティバル)Miyakojima Tourism Association
  10. Miyakojima City 17END Half Marathon in Irabu Island (5th) (宮古島市17ENDハーフマラソンin伊良部島大会)Miyakojima City 17END Half Marathon Executive Committee
  11. Ocean Fun Fest 2026 Miyakojima (Ocean Fun Fest 2026 宮古島 〜ビーチスポーツの祭り〜)Okinawa Convention & Visitors Bureau (Okinawa Story)