Naha in Summer
In summer (June, July and August), Naha sees average daytime highs around 28°C and overnight lows near 27°C, with 522 mm of rain over about 42 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Over the season highs climb from about 26°C in early June to 28°C by late August. The sky is clear or mostly clear about 31% of the time across summer, and the air most often feels miserable.
Summer is Naha's weakest season of the year to visit on our travel score. For the whole year in context, see Naha's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 27°C
- Rainfall
- 522 mm
- 42 wet days
- Avg wind
- 23 km/h
- Travel score
- 5.3
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Naha in Summer
Over the season highs climb from about 26°C in early June to 28°C by late August.
A typical summer day in Naha reaches about 28°C and drops to 27°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Naha
Once humidity and wind are folded in, summer brings about 71 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Naha weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 19° / 17° | 103 | 11.7 | 10.5 | 5.7 |
| Feb | 19° / 17° | 96 | 11.4 | 11.1 | 5.6 |
| Mar | 20° / 18° | 128 | 12.7 | 11.8 | 5.9 |
| Apr | 22° / 20° | 150 | 12.7 | 12.6 | 6.1 |
| May | 24° / 23° | 207 | 13.8 | 13.3 | 6.1 |
| Jun | 27° / 26° | 218 | 15.8 | 13.6 | 5.4 |
| Jul | 29° / 27° | 126 | 11.4 | 13.5 | 5.5 |
| Aug | 29° / 27° | 178 | 14.8 | 12.9 | 5.1 |
| Sep | 28° / 27° | 199 | 14.2 | 12.2 | 5.7 |
| Oct | 26° / 25° | 141 | 11.6 | 11.4 | 6.5 |
| Nov | 24° / 22° | 101 | 10.6 | 10.7 | 6.7 |
| Dec | 21° / 19° | 113 | 11.2 | 10.4 | 6.1 |
Cloud cover in Summer
The sky is clear or mostly clear about 31% of the time across summer.
Chance of precipitation in Summer
Naha gets around 522 mm of rain over 42 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 23 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 30 min in early June to 12 h 36 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.0 kWh/m².
Hazard calendar for Naha
In summer, Naha overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Naha sits in the Pacific typhoon belt; the season peaks July–October.
Is summer a good time to visit Naha?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Naha for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Naha in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Naha sees daytime highs around 28°C and nights near 27°C. Pack light clothes, rain gear and sun protection. Worth having: a windbreaker. About 42 days see rain.
Sea temperature near Naha in Summer
The nearest coast averages about 28°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 29°C and coldest in February near 22°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 23 | 22 | 22 | 23 | 25 | 27 | 29 | 29 | 28 | 27 | 25 | 24 |
| Comfort | Refreshing | Refreshing | Refreshing | Refreshing | Warm | Warm | Tropical | Tropical | Tropical | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 23 | Refreshing |
| Feb | 22 | Refreshing |
| Mar | 22 | Refreshing |
| Apr | 23 | Refreshing |
| May | 25 | Warm |
| Jun | 27 | Warm |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 28 | Tropical |
| Oct | 27 | Warm |
| Nov | 25 | Warm |
| Dec | 24 | Refreshing |
UV index in Naha in Summer
Clear-sky midday UV across summer averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Naha peaks around July 11 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 5 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 5 | 7 | 9 | 8 | 10 | 11 | 12 | 11 | 11 | 8 | 7 | 5 |
| Level | High | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Very high | High | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 5 | High |
| Feb | 7 | Very high |
| Mar | 9 | Very high |
| Apr | 8 | Very high |
| May | 10 | Very high |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 11 | Extreme |
| Oct | 8 | Very high |
| Nov | 7 | High |
| Dec | 5 | Moderate |
Air quality in Naha in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Naha is worst in March — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (July, 8 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 12 | 14 | 17 | 16 | 13 | 9 | 8 | 10 | 9 | 9 | 10 | 10 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Good |
| Feb | 14 | Moderate |
| Mar | 17 | Moderate |
| Apr | 16 | Moderate |
| May | 13 | Moderate |
| Jun | 9 | Good |
| Jul | 8 | Good |
| Aug | 10 | Good |
| Sep | 9 | Good |
| Oct | 9 | Good |
| Nov | 10 | Good |
| Dec | 10 | Good |
Where is Naha?
Naha sits at 26.2°N, 127.7°E, 1 m above sea level, in Japan. The nearest listed city is Tomigusuku, 3.0 km away.
Topography around Naha
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Naha.
Within 3 km, the terrain around Naha has only modest variations in elevation — a maximum elevation change of 92 m around an average of 17 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 191 m; within 80 km, significant variations in elevation — a maximum elevation change of 492 m.
The land around Naha is covered by artificial surfaces (69%) and water (21%) within 3 km, water (65%) within 16 km, and water (92%) within 80 km.
Japan travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 100 V · 50 / 60 Hz
- Prices
- ≈ 65% of US
- price level, 2025
- GDP per capita
- $35,951
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 0.2
- per 100k, 2023
- Road deaths
- 3.6
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very low
- EF EPI 446
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Naha (26.213°, 127.6785°, elevation 1 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.