Surabaya weather in July
Temperature, sea and sunshine in July: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in July
Good
Best time to visit: June – September
What is the weather like in Surabaya in July?
In July, Surabaya is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 28.5 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. Rain is rare: about 5 days bring 25 mm in total. On about 25 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a good month for a holiday in Surabaya.
July compared
How the weather changes from June to August. Tap a month to open it.
More details for July
- Daylight
- 11 h 44 min05:43 – 17:27
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 48 %on averageAll months
- Hot days
- 25 days30 °C or moreAll months
- Time zone
- UTC+7Asia/Jakarta
How the score comes together
- Temperatureweight 50 %55 %
- Sunshineweight 20 %85 %
- Few rainy daysweight 30 %94 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in July
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
Surabaya in July: quick answers
Is Surabaya hot in July?
Yes. In July, Surabaya is hot: daytime highs average 31 °C and nights stay around 24 °C. On about 25 days the thermometer climbs to 30 °C or more.
Can you swim in Surabaya in July?
Yes. In July the sea averages 28.5 °C – lovely and warm for swimming.
Does it rain much in Surabaya in July?
Rain is rare: about 5 days bring 25 mm in total.
Surabaya month by month
The whole year in SurabayaAll destinations: IndonesiaWhere to go in JulySea temperature in July
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences