July Weather in Surabaya, Indonesia

Last updated: August 23, 2025

In July, the average temperature in Surabaya, Indonesia hovers around 27°C (80°F), with comfortable minimums of 21°C (70°F) and occasional highs reaching up to 32°C (90°F). However, prepare for a bit of rain, as 107 mm (4.2 in) of precipitation is expected over roughly 18 days. Don't forget to stay hydrated, as the average humidity sits at a notable 80%!

July Temperature in Surabaya

In July in Surabaya, the average temperature is 27°C (80°F). The maximum can reach 32°C (90°F) and the minimum can be as low as 21°C (70°F). This makes it an ideal destination for travelers looking to enjoy warm, pleasant weather.

July Weather in Surabaya: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Surabaya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Surabaya, July typically has an average temperature of 27°C (80°F), with highs reaching up to 32°C (90°F) and lows dropping to around 21°C (70°F).

Data source: Temperature data for Surabaya generated using information from the Copernicus Climate Change Service.

July Precipitation in Surabaya

In Surabaya in July, the precipitation amount is 107 mm (4.2 in) over the course of 18 days.

July Precipitation Trends in Surabaya

The chart displays monthly precipitation patterns in Surabaya, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Surabaya, July typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 18 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

July Humidity in Surabaya

In Surabaya in July humidity is 80%. With an average temperature of 27°C (80°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities feel more exhausting and sticky, and challenging you to stay hydrated while exploring.

July Average Humidity in Surabaya

This chart illustrates the average monthly humidity levels in Surabaya, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Surabaya is approximately 80%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Surabaya

In Surabaya in July, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Surabaya.

Maximum UV Index Levels in Surabaya for July

The chart shows the monthly maximum UV Index (UVI) for Surabaya in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in Surabaya typically reaches 12, which falls under the extreme exposure category.

Data source: Surabaya July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How July Weather in Surabaya Compares to Other Months

Weather in Surabaya varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Surabaya, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Surabaya, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	257 mm (10.1 inches)	85%	extreme
February Weather	27°C (81°F)	325 mm (12.8 inches)	86%	extreme
March Weather	27°C (81°F)	418 mm (16.4 inches)	84%	extreme
April Weather	28°C (82°F)	318 mm (12.5 inches)	82%	extreme
May Weather	28°C (82°F)	242 mm (9.5 inches)	80%	extreme
June Weather	27°C (81°F)	198 mm (7.8 inches)	80%	extreme
July Weather	27°C (80°F)	107 mm (4.2 inches)	80%	extreme
August Weather	27°C (80°F)	77 mm (3.0 inches)	78%	extreme
September Weather	27°C (81°F)	97 mm (3.8 inches)	74%	extreme
October Weather	28°C (82°F)	118 mm (4.6 inches)	76%	extreme
November Weather	28°C (82°F)	250 mm (9.8 inches)	78%	extreme
December Weather	27°C (81°F)	340 mm (13.4 inches)	80%	extreme