Naha WBGT Today — Wet Bulb Globe Temperature
Updated planning preview · 12:00 forecast from WeatherAPI
Estimated WBGT
28.6°C
Very high
Limit strenuous activity and use conservative work-rest cycles.
Temperature
30°C
Humidity
72%
Heat index
35°C
UV index
10.1
Best outdoor window
18:00–10:00
Lowest combined heat and UV load in the available hourly preview.
Hourly WBGT
WBGT values are labeled as modeled estimates until a provider supplies measured readings.
| Time | Temperature | Heat index | Estimated WBGT | UV | Risk |
|---|---|---|---|---|---|
| 12 | 30°C | 35°C | 28.6°C | 10.1 | High |
| 14 | 30°C | 35°C | 28.7°C | 9.0 | High |
| 16 | 29°C | 34°C | 28.3°C | 3.2 | High |
| 18 | 27°C | 31°C | 27.5°C | 0.2 | Moderate |
| 8 | 27°C | 30°C | 26.9°C | 0.9 | Moderate |
| 10 | 27°C | 30°C | 26.5°C | 5.2 | Moderate |
| 12 | 27°C | 29°C | 26.0°C | 4.5 | Moderate |
| 14 | 29°C | 32°C | 27.0°C | 7.0 | Moderate |
Today's outlook
In Naha, the highest modeled heat burden in this preview occurs around 16:00. The recommended window is selected from the lowest combined risk score, temperature, and UV—not from generic city copy.
Three-day forecast
Sunday
Heat index up to 35°C
30°C / 27°C
HighMonday
Heat index up to 32°C
29°C / 26°C
HighTuesday
Heat index up to 33°C
29°C / 26°C
HighToday in Naha
What changes across the day
Based on the available hourly WeatherAPI forecast
Peak heat index
35°C at 14:00
The preview low is 29°C around 12:00.
Feels-like difference
5°C above air temp
Current humidity is 72%, one input that changes evaporative cooling.
Peak UV
10.1 at 12:00
UV and heat are separate hazards; the lowest-heat hour may still need sun protection.
Tomorrow's direction
3°C cooler tomorrow
Today's forecast range is 27°C–30°C.
Where these numbers come from
WeatherAPI supplies the forecast. HeatGuard calculates heat-index risk and models WBGT from forecast temperature, humidity and a daytime solar allowance. Modeled WBGT is not an on-site globe-thermometer reading.
Local planning context
Planning for heat in Naha, Japan
Naha's subtropical humidity, strong sun and warm evenings can limit recovery from daytime heat. Use the hourly estimate to reduce exposure, then compare it with Japan's official Naha WBGT observation and alert.
Forecasts describe outdoor conditions, not an individual's medical risk. Workload, duration, shade, clothing, acclimatization and health can change the appropriate decision.
Check Japan Ministry of the Environment WBGT forecast ↗Nearby forecasts
Keep planning
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