Jember climate
Jember (Indonesia) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 27 °C81 °F, and about 1,647 mm65 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Jember climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3085 | 2476 | 2781 | 29412 |
| Feb | 2985 | 2476 | 2780 | 28211 |
| Mar | 3085 | 2476 | 2781 | 2379.3 |
| Apr | 3086 | 2475 | 2781 | 1656.5 |
| May | 3086 | 2374 | 2780 | 1124.4 |
| Jun | 3085 | 2272 | 2678 | 632.5 |
| Jul | 3085 | 2170 | 2578 | 381.5 |
| Aug | 3188 | 2169 | 2679 | 190.8 |
| Sep | 3392 | 2271 | 2882 | 180.7 |
| Oct | 3595 | 2374 | 2984 | 562.2 |
| Nov | 3492 | 2576 | 2984 | 1194.7 |
| Dec | 3187 | 2576 | 2882 | 2449.6 |
| Year | 3595 | 2169 | 2781 | 1,64765 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 87% | 83% | 5.5 | 12:33 |
| Feb | 89% | 81% | 5.7 | 12:22 |
| Mar | 88% | 75% | 5.7 | 12:10 |
| Apr | 88% | 66% | 5.6 | 11:56 |
| May | 87% | 52% | 5.2 | 11:45 |
| Jun | 86% | 47% | 5.0 | 11:39 |
| Jul | 83% | 44% | 5.1 | 11:41 |
| Aug | 77% | 39% | 5.8 | 11:51 |
| Sep | 70% | 40% | 6.4 | 12:04 |
| Oct | 67% | 51% | 6.5 | 12:18 |
| Nov | 73% | 70% | 6.0 | 12:30 |
| Dec | 83% | 86% | 5.4 | 12:36 |
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 Jember is like
The warmest month is November, with an average high of 34 °C92 °F and a low of 25 °C76 °F. The coldest is July, when highs average 30 °C85 °F and lows 21 °C70 °F. Seasonal differences are small — just 3.7 °C6.7 °F between the warmest and the coolest month.
It is wet, with about 1,647 mm65 in of precipitation per year. The wettest three-month stretch is December–February, which brings 50% of the annual total. Months with less than 20 mm0.8 in on average: August and September. The wettest month is January (294 mm12 in), the driest is September (18 mm0.7 in).
Relative humidity ranges from 67% in October to 89% in February. The clearest skies (lowest average cloud amount, 39%) are typical of August. Average wind speed near the ground ranges from 5 km/h (3 mph) in March to 10 km/h (6 mph) in September.
Best time to visit Jember
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June–August: average highs of 30 °C85 °F to 31 °C88 °F with 19 mm0.8 in to 63 mm2.5 in of precipitation per month.
The most challenging month is January, which is very wet (294 mm12 in) and humid (87% 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 Jember
- Wetter months (December–April) — highs 2985 to 31 °C87 °F, lows 2475 to 25 °C76 °F, about 244 mm9.6 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–November) — highs 3085 to 35 °C95 °F, lows 2169 to 25 °C76 °F, about 61 mm2.4 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Jember compares
Compared with Situbondo, about 62 km to the northeast, Jember is on average 1.1 °C1.9 °F cooler and receives a similar amount of precipitation. The difference is largest in July (2 °C3.5 °F cooler).
Of the 110 places in Indonesia covered by World Climates, Jember is the 52nd warmest by annual mean temperature and the 102nd 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): Bạc Liêu (Vietnam, Aw), Giá Rai (Vietnam, Aw) and Sóc Trăng (Vietnam, Aw).
Nearby places
- Lumajang 52 km · 27 °C81 °F · 1,756 mm69 in
- Situbondo 62 km · 28 °C83 °F · 1,647 mm65 in
- Probolinggo 71 km · 28 °C82 °F · 1,756 mm69 in
- Banyuwangi 73 km · 27 °C81 °F · 1,750 mm69 in
- Negara 103 km · 27 °C80 °F · 1,558 mm61 in
- Pasuruan 105 km · 28 °C83 °F · 1,760 mm69 in
- Malang 120 km · 25 °C76 °F · 1,867 mm74 in
- Surabaya 146 km · 28 °C83 °F · 1,881 mm74 in
Frequently asked questions
What is the warmest month in Jember?
November is the warmest month in Jember, with an average high of 34 °C (92 °F) and an average low of 25 °C (76 °F).
What is the coldest month in Jember?
July is the coldest month, with an average high of 30 °C (85 °F) and an average low of 21 °C (70 °F).
When does it rain the most in Jember?
January is the wettest month with about 294 mm (11.6 in) of precipitation; September is the driest with about 18 mm (0.7 in).
What is the best time to visit Jember?
Judging by long-term averages, the most comfortable months are June–August.
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.
The grid cell’s average elevation is 547 m, while Jember lies at about 86 m. Temperatures on this page were therefore adjusted by +3 °C5.4 °F using the standard lapse rate of 6.5 °C per 1,000 m.