High humidity (71%) combined with the heat means it will feel more uncomfortable than the air temperature alone suggests — stay hydrated if you're active outside.

Nearby Regional Outlook

Surabaya Weather Radar

Live precipitation · Cloud cover · Wind

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Frequently Asked Questions

What is the hottest month in Surabaya?

The hottest month in Surabaya is typically October, with daytime highs averaging around 32.7°C (91°F), based on 10 years of historical weather data. Overnight lows during this period average near 25°C (77°F).

What is the coldest month in Surabaya?

The coldest month in Surabaya is typically July, with overnight lows averaging around 23.8°C (75°F) and daytime highs near 30.7°C (87°F), based on 10 years of historical weather data.

Does Surabaya have a rainy season?

Surabaya doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. February is the wettest month on average (about 326 mm), while August is the driest (about 12 mm).

What's the best time of year to visit Surabaya?

The best time to visit Surabaya is typically June to September, when daytime highs average a comfortable 31.2°C (88°F). Rainfall during this window averages around 31 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.

Is Surabaya's air quality safe right now?

As of the latest reading, Surabaya's air quality index (AQI) is 118, rated "Unhealthy for Sensitive Groups", based on the nearest monitoring station. Sensitive groups children, older adults, and those with respiratory conditions should limit prolonged outdoor exertion.

Atmospheric Details

Wind

18 km/h

ESE · Gentle Breeze · Max 19 km/h

Humidity

71 %

High · feels muggy

UV Index

Very High

Visibility

10 km

Excellent

Pressure

1012 hPa

Stable

Dew Point

22°C

Very humid

Today vs Normal

32°C-2° below normal

The long-term average high for today is 34°C.

4 of the last 28 days with published data ran above normal.

It continues that pattern - today's forecast is also running below normal.

Red = above normal, blue = at or below · last 12 days

Air Quality

Moderate

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Health & Activity Advice

⚠ Limit Outdoor Time

UV index is 9 today — very high. Limit sun exposure around midday, apply SPF 30+ every two hours, and seek shade when possible.

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Morning before 10 AM or evening after 4 PM is the more comfortable window for outdoor activity today.

High humidity (71%) combined with the heat means it will feel more uncomfortable than the air temperature alone suggests — stay hydrated if you're active outside.