Surabaya Weather in May
During May, Surabaya experiences very high daytime temperatures of 33°C (91°F) and cooler nights around 26°C (79°F). Expect quite a bit of rainfall. Around 87 mm (3.4 in) is typical.
Rainfall in Surabaya in May
Typically, about 7 days will experience rainfall, with an average of 87 mm (3.4 in) for the month. Although rain is not especially frequent, individual showers can still be quite heavy.
Temperature in Surabaya in May
May in Surabaya brings very high temperatures, with highs of 33°C (91°F) and nights around 26°C (79°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. At 26°C (79°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.
Sunshine in Surabaya in May
The city usually sees around 191 hours of sunlight, indicating many sunny days — a great month for sightseeing.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Surabaya.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Indonesia, check out our Surabaya's climate page.
Surabaya Temperature in May
Min Temperature
26°C (79°F)
Max Temperature
33°C (91°F)
Chance of Rain
23%
Precipitation
87 mm (3.4 in)
Rainy days
7 days
Humidity
65%
Sunshine
191 hours
Percentage Sunshine
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Surabaya typically stay consistent throughout May, with daily highs averaging around 33°C (91°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in May
Daily Historical Precipitation
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Surabaya in May
Browse day-by-day weather records for Surabaya spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Surabaya historical weather extremes in May
Based on 33 years of weather observations in Surabaya between 1993 and 2026, these are the recorded extremes.
- Surabaya recorded its highest May temperature of 35°C (95°F) on May 4, 2003.
- Surabaya experienced its chilliest May day on May 27, 2013, reaching only 27°C (81°F).
- The coldest night in May in Surabaya was on May 20, 2002, with a minimum of 17°C (63°F).
Best Places in Indonesia in May
Find out more about the weather in Indonesia and which places have the best travel conditions in this month. See all of Indonesia in May →
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What to Wear in Surabaya in May
Get ready for hot weather in May! Lightweight, breathable fabrics are your best friend during this month. Cotton and linen shirts, shorts, sundresses, and sandals will keep you comfortable. Light colors help reflect the heat, avoid wearing black. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Surabaya in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Indonesia, check out our Surabaya's climate page.
Temperature Rainfall Sunshine Humidity
See the full Surabaya climate overview or explore weather in Indonesia.
