Osaka WBGT Today — Wet Bulb Globe Temperature
Updated planning preview · 12:00 forecast from WeatherAPI
Estimated WBGT
27.9°C
High
Shorten hard efforts and increase recovery time.
Temperature
30°C
Humidity
64%
Heat index
34°C
UV index
8.3
Best outdoor window
18:00–9:00
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 | 34°C | 27.9°C | 8.3 | High |
| 14 | 31°C | 35°C | 28.5°C | 6.0 | High |
| 16 | 30°C | 33°C | 27.8°C | 1.7 | High |
| 18 | 28°C | 32°C | 27.1°C | 0.0 | Moderate |
| 7 | 25°C | 27°C | 25.1°C | 0.5 | Moderate |
| 9 | 28°C | 30°C | 26.3°C | 3.8 | Moderate |
| 11 | 30°C | 33°C | 27.2°C | 7.9 | High |
| 13 | 31°C | 33°C | 27.7°C | 7.7 | High |
Today's outlook
In Osaka, the highest modeled heat burden in this preview occurs around 13:00. 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
31°C / 25°C
HighMonday
Heat index up to 33°C
31°C / 25°C
HighTuesday
Heat index up to 29°C
27°C / 22°C
ModerateToday in Osaka
What changes across the day
Based on the available hourly WeatherAPI forecast
Peak heat index
35°C at 14:00
The preview low is 27°C around 7:00.
Feels-like difference
4°C above air temp
Current humidity is 64%, one input that changes evaporative cooling.
Peak UV
8.3 at 12:00
UV and heat are separate hazards; the lowest-heat hour may still need sun protection.
Tomorrow's direction
2°C cooler tomorrow
Today's forecast range is 25°C–31°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 Osaka, Japan
Osaka residents already encounter WBGT through Japan's national heat-illness warning system. Use this hourly forecast-based estimate for planning, then compare it with the Ministry of the Environment's local WBGT observation and alert before strenuous outdoor activity.
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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