Year-round weather and climate in Surabaya, Indonesia
Average temperatures in Surabaya run from an average low of 24°C75°F in July up to an average high of 33°C91°F in October. August is the driest month at 2 rainy days; January the wettest at 30. Here is the annual climate data, so you know what you are packing for.
Good to know
- Population
- 2.9M
- Currency
- IDR
- Language
- Indonesian
- Time zone
- Jakarta
Best time to visit
To avoid the most intense heat, the best time to visit is during the milder season around July, August, and September.
Rain character
Tropical Downpours: Expect intense bursts of rain during wetter months. Pack quick-drying footwear and a compact umbrella.
Day-to-night swing
Evening Chill: Temperatures drop by a noticeable 8°C14°F when the sun goes down. A light sweater or jacket is usually all you need for evening plans.
Seasonality Profile
Tropical Monsoon: Consistent heat year-round. Defined entirely by its dramatic shift between extreme dry and torrential wet seasons.
Evening vibe
Cozy Indoor Culture: Evenings are generally crisp, damp, or sweltering. Nightlife centers around indoor venues.
Sightseeing stamina
Summer Heat Fatigue: Midday heat in August, September, October, and November is intense. Pack high-SPF sunscreen and a wide-brimmed hat.
Average temperatures, sunshine, and rainfall
Average monthly weather in Surabaya, based on recent historical data. Essential insights on temperature swings, expected rainfall, and daily sunshine.
Bars span the average daily low to high. Aug is typically driest at 2 days (13mm); Jan the wettest at 30 days (316mm).
| Month | Average high | Average low | Sunshine hours | Rainy days | Total rainfall |
|---|---|---|---|---|---|
| Jan | 30°C / 87°F | 25°C / 76°F | 9h | 30 | 316mm |
| Feb | 30°C / 86°F | 25°C / 76°F | 9h | 28 | 363mm |
| Mar | 30°C / 87°F | 25°C / 77°F | 9h | 28 | 291mm |
| Apr | 31°C / 87°F | 25°C / 77°F | 10h | 23 | 199mm |
| May | 31°C / 87°F | 26°C / 78°F | 10h | 13 | 107mm |
| Jun | 31°C / 87°F | 25°C / 77°F | 11h | 11 | 58mm |
| Jul | 31°C / 87°F | 24°C / 75°F | 11h | 4 | 20mm |
| Aug | 31°C / 89°F | 24°C / 75°F | 11h | 2 | 13mm |
| Sep | 32°C / 90°F | 24°C / 76°F | 11h | 4 | 14mm |
| Oct | 33°C / 91°F | 25°C / 77°F | 11h | 10 | 67mm |
| Nov | 32°C / 89°F | 25°C / 77°F | 10h | 22 | 231mm |
| Dec | 31°C / 87°F | 25°C / 77°F | 9h | 28 | 314mm |
Weather data by Open-Meteo.com (opens in a new tab)
Frequently Asked Questions
When is the sunniest time of year to visit Surabaya?
The most sunshine in Surabaya comes around September, averaging 11 hours a month. If you're heading there then, pack your sunglasses and sunscreen.
What clothes should I pack for Surabaya?
Your packing list depends entirely on when you travel. Temperatures in Surabaya swing from an average low of 24°C75°F in July up to 33°C91°F in October. The Packola app builds a tailored packing list for you based on the live weather forecast for your exact travel dates.
Do I need to pack an umbrella for Surabaya?
Surabaya gets rain on about 203 days out of the year. The wettest month is January. If you're traveling during the rainy season, you'll definitely want to pack an umbrella and a light rain jacket.
Pack smarter.
Averages get you close, but the week you travel is what matters. Get the live forecast, a smart packing list, and discover the best local spots and activities in Surabaya with Packola.
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