Surabaya Weather in January
Thinking of visiting Surabaya in January? Expect very high temperatures reaching 32°C (90°F) during the day, dropping to 25°C (77°F) at night. Heavy showers are common during the rainy season.
Rainfall in Surabaya in January
Surabaya is in the rainy season in January, with rain on around 17 days and an average of 296 mm (12 in). Rain during the rainy season here tends to be intense rather than just persistent drizzle. Expect significant downpours, often in the late afternoon.
Temperature in Surabaya in January
Temperatures in Surabaya in January top out at 32°C (90°F) and drop to 25°C (77°F) overnight. It's usually most comfortable outside during the morning and later in the day. At 25°C (77°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.
Sunshine in Surabaya in January
You can expect a moderate amount of sunlight, with approximately 138 hours. Even though this month is part of the wet season, you can still see the sun occasionally.If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit Surabaya. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 January
Min Temperature
25°C (77°F)
Max Temperature
32°C (90°F)
Chance of Rain
58%
Precipitation
296 mm (12 in)
Rainy days
17 days
Humidity
66%
Sunshine
138 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2026)
Based on our historical records, temperatures in Surabaya typically stay consistent throughout January, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in January
Daily Historical Precipitation
50-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Surabaya in January
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 January
Based on 34 years of weather observations in Surabaya between 1991 and 2025, these are the recorded extremes.
- Surabaya recorded its highest January temperature of 37°C (99°F) on January 3, 1994.
- The lowest daytime temperature in January was 23°C (73°F), recorded on January 19, 1992.
- The coldest night in January in Surabaya was on January 19, 2000, with a minimum of 20°C (68°F).
Best Places in Indonesia in January
Find out more about the weather in Indonesia and which places have the best travel conditions in this month. See all of Indonesia in January →
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What to Wear in Surabaya in January
Warm weather calls for comfortable, breathable clothing in January. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Surabaya in January
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.
