Surabaya weather in September (East Java, Indonesia)

What can you expect from the weather in Surabaya during September? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.

In September, Surabaya generally has very high temperatures and low rainfall. Throughout the daytime, temperatures often hover around 34°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 25°C.

Keep in mind that while these are the average temperatures, there can be days that are even hotter. It's essential to be prepared for such heat. Wearing light, breathable fabrics and protecting yourself from the sun's intensity with hats or shades can make a difference. Hydration is key, so remember to drink plenty of water, especially if you find yourself outdoors for extended periods.

Surabaya in September usually receives low rainfall, averaging around 22 mm for the month. Based on our climate data of the past 30 years, about 1 day of rain are anticipated.

The days are predominantly sunny, with an estimated total of around 229 hours of sunshine. This amount of sunlight does not only brightens the days but also contributes to a cheerful ambiance in the area during this month.

If you prefer dry days with pleasant temperatures, July and August typically offer the best circumstances. While January, February, March and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Surabaya climate page with graphs.

 

Surabaya, monthly averages in September

Min TemperatureMin Temperature 25°C  
Max TemperatureMax Temperature 34°C  
Chance of RainChance of Rain 4%  
PrecipitationPrecipitation 22 mm  
Rainy daysRainy days 1 day  
HumidityHumidity 54%  
SunshineSunshine 229 hours  
Percentage SunshinePercentage Sunshine  

Where to go in Indonesia in September

Find out more about the weather in Indonesia in September and which places have the best weather conditions in this month.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Surabaya in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming
10/10
Cycling
8/10
Walking
8/10
Barbeque
10/10
Camping
10/10
Outdoor sports
8/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Surabaya.

Our site offers climate and forecast data for every country in the world. Are you going to Indonesia? On this website you can find historical weather averages for many cities in Indonesia. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.