Serang climate
Serang (Indonesia) has a tropical monsoon climate (Köppen Am). The average temperature over the year is 27 °C81 °F, and about 2,073 mm82 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Serang climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2983 | 2577 | 2780 | 31913 |
| Feb | 2883 | 2577 | 2780 | 36114 |
| Mar | 2984 | 2678 | 2781 | 2379.3 |
| Apr | 2985 | 2678 | 2781 | 1777.0 |
| May | 3085 | 2678 | 2882 | 1335.2 |
| Jun | 2985 | 2578 | 2781 | 963.8 |
| Jul | 2984 | 2576 | 2780 | 933.7 |
| Aug | 3085 | 2476 | 2780 | 542.1 |
| Sep | 3087 | 2576 | 2781 | 722.8 |
| Oct | 3187 | 2577 | 2882 | 1194.7 |
| Nov | 3086 | 2678 | 2882 | 1756.9 |
| Dec | 2984 | 2578 | 2781 | 2379.3 |
| Year | 3187 | 2476 | 2781 | 2,07382 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 84% | 91% | 4.5 | 12:26 |
| Feb | 85% | 92% | 4.4 | 12:18 |
| Mar | 84% | 88% | 4.8 | 12:09 |
| Apr | 84% | 84% | 4.8 | 11:59 |
| May | 83% | 71% | 4.7 | 11:50 |
| Jun | 82% | 64% | 4.6 | 11:46 |
| Jul | 80% | 59% | 4.8 | 11:48 |
| Aug | 78% | 52% | 5.3 | 11:55 |
| Sep | 76% | 60% | 5.5 | 12:05 |
| Oct | 77% | 76% | 5.2 | 12:15 |
| Nov | 79% | 88% | 4.8 | 12:24 |
| Dec | 83% | 93% | 4.5 | 12:28 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Serang is like
The warmest month is October, with an average high of 31 °C87 °F and a low of 25 °C77 °F. The coldest is February, when highs average 28 °C83 °F and lows 25 °C77 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 1.2 °C2.1 °F.
It is very wet, receiving about 2,073 mm82 in of precipitation per year. The wettest three-month stretch is December–February, which brings 44% of the annual total. The wettest month is February (361 mm14 in), the driest is August (54 mm2.1 in).
Relative humidity ranges from 76% in September to 85% in February. The clearest skies (lowest average cloud amount, 52%) are typical of August. Average wind speed near the ground ranges from 7 km/h (4 mph) in September to 11 km/h (7 mph) in January.
Best time to visit Serang
Based on these averages, the most comfortable months for sightseeing and outdoor activities are August and September: average highs of 30 °C85 °F to 30 °C87 °F with 54 mm2.1 in to 72 mm2.8 in of precipitation per month.
The most challenging month is February, which is very wet (361 mm14 in) and humid (85% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Serang
- Wetter months (November–April) — highs 2883 to 30 °C86 °F, lows 2577 to 26 °C78 °F, about 251 mm9.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (May–October) — highs 2984 to 31 °C87 °F, lows 2476 to 26 °C78 °F, about 94 mm3.7 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
How Serang compares
Compared with Jakarta, about 77 km to the east, Serang has practically the same average temperature and receives 6% less precipitation (2,073 mm82 in vs 2,202 mm87 in).
Of the 110 places in Indonesia covered by World Climates, Serang is the 47th warmest by annual mean temperature and the 75th wettest by annual precipitation. See all of them on the Indonesia climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Apia (Samoa, Am), Pago Pago (American Samoa, Am) and Tacurong (Philippines, Af).
The same NASA POWER grid cell also contains Cilegon (pop. 470,378), Pasarkemis (pop. 263,289), Cikupa (pop. 174,041) and Kresek (pop. 110,182). Their long-term averages in this dataset are essentially the same as for Serang, so they do not have separate pages.
Nearby places
- Curug 48 km · 27 °C80 °F · 2,176 mm86 in
- Jakarta 77 km · 27 °C81 °F · 2,202 mm87 in
- Depok 80 km · 27 °C80 °F · 2,272 mm89 in
- Pelabuhanratu 106 km · 27 °C81 °F · 2,458 mm97 in
- Cikarang 112 km · 27 °C81 °F · 2,272 mm89 in
- Sukabumi 123 km · 23 °C73 °F · 2,610 mm103 in
- Bandar Lampung 125 km · 27 °C80 °F · 1,916 mm75 in
- Rengasdengklok 127 km · 27 °C81 °F · 2,360 mm93 in
Frequently asked questions
What is the warmest month in Serang?
October is the warmest month in Serang, with an average high of 31 °C (87 °F) and an average low of 25 °C (77 °F).
What is the coldest month in Serang?
February is the coldest month, with an average high of 28 °C (83 °F) and an average low of 25 °C (77 °F).
When does it rain the most in Serang?
February is the wettest month with about 361 mm (14.2 in) of precipitation; August is the driest with about 54 mm (2.1 in).
What is the best time to visit Serang?
Judging by long-term averages, the most comfortable months are August and September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.