East Java · Indonesia
Surabaya in January
In January, Surabaya averages a daytime high of 32 °C and a night-time low of 25 °C, with about 298 mm of rain over the month. Surabaya has no month that is both mild and dry by the measure used here.
- Average high
- 32 °C
- Average low
- 25 °C
- Rain in the month
- 298 mm
- Daylight on 15 Jan
- 12 h 30 min
- Comfortable month
- No
- Places to stay
- 420
When to go
How January compares with the rest of the year in Surabaya
January is tied for the coolest month in Surabaya by average daytime high; across the year the highs run from 32 °C to 34 °C and the lows from 24 °C to 26 °C. By day, January is 1 °C cooler than December, and February is about the same as January.
January brings 298 mm of rain, more than the monthly average of 139 mm (1668 mm a year); it is the wettest month.
On 15 January the sun is up for about 12 h 30 min, against 11 h 40 min at the shortest and 12 h 30 min at the longest point of the year (calculated from the latitude, sunrise to sunset).
| Month | High | Low | Rain | Comfortable |
|---|---|---|---|---|
| January | 32 °C | 25 °C | 298 mm | |
| February | 32 °C | 25 °C | 264 mm | |
| March | 32 °C | 25 °C | 255 mm | |
| April | 32 °C | 25 °C | 205 mm | |
| May | 32 °C | 25 °C | 98 mm | |
| June | 32 °C | 25 °C | 74 mm | |
| July | 32 °C | 24 °C | 19 mm | |
| August | 32 °C | 24 °C | 12 mm | |
| September | 33 °C | 24 °C | 15 mm | |
| October | 34 °C | 25 °C | 56 mm | |
| November | 33 °C | 26 °C | 134 mm | |
| December | 32 °C | 25 °C | 237 mm |
Comfortable means average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month. Averages for 1991–2020 over the surrounding area, a grid square about 50 km across, so a coast or a nearby mountain can make the town itself warmer or cooler. Data: CRU TS v4.10, Climatic Research Unit, University of East Anglia (Open Database License).
When to go
Is January a good time to visit Surabaya?
Not by the measure used here: the average high of 32 °C is above 29 °C and about 298 mm of rain is 80 mm or more. No month in Surabaya meets it.
The measure is about weather for a city stay only; it says nothing about events, school holidays or prices.
Public holidays in Indonesia in January
Nationwide public holidays; shops and offices may close on these dates.
Where to stay
Where to stay in Surabaya
This guide lists 420 places to stay in Surabaya, hotels recorded in Wikidata. By straight-line distance from the centre: under 1 km, 10; 1–3 km, 83; 3–10 km, 250; 10 km or more, 77.
Sources: climate from CRU TS v4.10 (Climatic Research Unit, University of East Anglia; Open Database License), 1991–2020 averages; day length calculated from the latitude; public holidays from python-holidays (MIT); places to stay from each operator's own public pages and Wikidata. How this guide is made.