The best times to visit Surabaya for ideal weather are
June 11th to October 14th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Surabaya Travel Guide
Weather in Surabaya
Average temperatures in Surabaya vary barely at all. Considering humidity, temperatures feel hot all year with a fair chance of precipitation about half of the year. The area is less temperate than some — in the 16th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Surabaya, the hottest months are October, November, and then May. See average monthly temperatures below. The warmest time of year is generally mid October where highs are regularly around 95.5°F (35.3°C) with temperatures rarely dropping below 78°F (25.6°C) at night.
Surabaya Temperatures (Fahrenheit)
Surabaya Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Surabaya Perceived Temperature (F)
Surabaya Perceived Temperature (C)
Average Surabaya Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Surabaya are August, July, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid June. For example, on the week of June 18th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late January and early February with an average of 5 days of significant precipitation the week of January 29th.
When can you find snow in Surabaya? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
The graph below shows the % chance of rainy and snowy days in Surabaya.
Snow on the Ground
The graph below shows the average snow on the ground in Surabaya (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Surabaya has some very humid months, with other comfortably humid months. The least humid month is September (56.2% relative humidity), and the most humid month is February (75.5%).
Wind in Surabaya is usually calm. The windiest month is August, followed by January and September. August’s average wind speed of around 6 knots (6.9 MPH or 11.2 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early August where average top sustained speeds reach 12.7 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Surabaya.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||5.7||Light breeze||11.8||Significant breeze|
|Feb||5.4||Light breeze||11.7||Significant breeze|
|Mar||4.3||Light breeze||10.2||Significant breeze|
|Apr||3.8||Barely noticeable||9.2||Gentle breeze|
|May||4.4||Light breeze||10.1||Significant breeze|
|Jun||4.7||Light breeze||10.2||Gentle breeze|
|Jul||5.5||Light breeze||11.5||Significant breeze|
|Aug||6||Light breeze||12.2||Significant breeze|
|Sep||5.7||Light breeze||12.1||Significant breeze|
|Oct||5.7||Light breeze||11.6||Significant breeze|
|Nov||3.9||Barely noticeable||9.1||Significant breeze|
|Dec||3.7||Barely noticeable||9.2||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Surabaya?
Our best data indicates this area is somewhat safe, but with extra warnings in a few regions. As of Aug 21, 2019 there are travel warnings and regional advisories for Indonesia; exercise a high degree of caution and avoid some areas. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Aug 14, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Surabaya, Indonesia is August, followed by October and June. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Surabaya in December. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Surabaya Travel Experience by Season
Fall (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 92.3°F (33.5°C) and 90.5°F (32.5°C) with similar temperatures in the later months. Rain is somewhat common with 5 to 12 days of significant precipitation per month. Fall is fairly slow for tourism, which makes it a good time for those looking for deals.
Winter (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the least precipitation with 1 to 2 days of precipitation per month. June – August is the busiest season for tourism in Surabaya, so lodging and other accommodations may cost more than usual.
Spring (September through November)
Spring daily highs range from 95.5°F (35.3°C) and 92.8°F (33.8°C), which will feel warmer than comfortable given the humidity and wind. It rains or snows a normal amount: 1 to 5 days per month. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.
Summer (December through February)
Weather is perfect this time of year in Surabaya to be enjoyable for warm weather travelers. The average high during this season is between 91.9°F (33.3°C) and 89.5°F (31.9°C). On average, it rains or snows a very great amount: 13 to 15 times per month. These times of year are the slowest with tourists.