Isa, Japan — 14-Day Weather Forecast

The 7-day forecast for Isa is generally reliable for temperature trends and major weather patterns. Days 1–3 are most accurate, while days 8–14 should be used for general planning only.

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The rain percentage shows the probability of precipitation occurring at any point during that day. A 30% chance means there's roughly a 1-in-3 chance of rain.

Isa averages about 475 mm of rainfall over 19 rainy days in June. Check the precipitation chart above for the latest day-by-day outlook.

Yes. Isa averages around 2 snow days and 1 cm of snowfall per month during winter. The forecast above shows expected snowfall for the coming days.

Wind speeds in Isa average up to 13 km/h (8 mph) in June. Check the wind tab in the interactive chart above for hourly and daily wind forecasts.

The average UV index in Isa during June is 6. This is moderate — sunscreen is recommended for extended outdoor time.

UV 1–2 is low risk. UV 3–5 is moderate — wear sunscreen. UV 6–7 is high — limit midday sun exposure. UV 8+ is very high — seek shade and wear protective clothing.

Average humidity in Isa during June is around 87%. This is quite humid — expect muggy conditions, especially in the afternoon.

The 'feels like' temperature accounts for wind chill and humidity to reflect how the air actually feels on your skin. In cold, windy conditions it will be lower than the actual temperature; in hot, humid conditions it will be higher.