Jember, Indonesia experiences average highs of 29°C (84°F) and lows of 23°C (73°F) throughout the year. Rainfall is frequent, averaging about 20 rainy days per month. Sunshine is abundant, averaging about 10 hours per day. High humidity combined with warm temperatures produces a tropical feel year-round. Average highs have stayed broadly stable across the available records.
Jember, Indonesia Weather & Climate 2026
Monthly climate averages for Jember, Indonesia. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: May–Oct 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
3.8/10
Best: July, August
UV Index
8
High
Temperature 29°C / 23°C
Feels Like 35°C / 27°C
Rainy Days 20
Rainfall 198 mm
Sunshine 10 h
Humidity 86%
Wind Speed 9 km/h
Dew Point 23°C
Hottest Month
30°C
October
Avg Low23°C
Rain20days
Coldest Month
21°C
July
Avg High28°C
Rain10days
Driest Month
9days
August
Avg High29°C
Avg Low21°C
Windiest Month
12 km/h
August (Gusts 32)
Worst Time to Visit
Consider avoiding January, February, March, April due to extreme heat, heavy rainfall, oppressive humidity.
Sun Position
Sunrise 05:37
Daylight 11.6h
Sunset 17:16
Live conditions—
Jember on the map · live conditions
Jember, Indonesia
- Continent
- Asia
- Country
- Indonesia
- City
- Jember
- Population
- 298.6K
- Coordinates
- -8.17°, 113.70°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 30°C
Avg Low 23°C
Rain 20 days/mo
Summer
Dec–Feb
Avg High 29°C
Avg Low 23°C
Rain 28 days/mo
Autumn
Mar–May
Avg High 30°C
Avg Low 23°C
Rain 23 days/mo
Winter
Jun–Aug
Avg High 28°C
Avg Low 22°C
Rain 11 days/mo
2/3 best months
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 29°C / 23°C . Feb: 29°C / 23°C . Mar: 29°C / 23°C . Apr: 30°C / 23°C . May: 30°C / 23°C . Jun: 29°C / 22°C . Jul: 28°C / 21°C . Aug: 29°C / 21°C . Sep: 29°C / 22°C . Oct: 30°C / 23°C . Nov: 29°C / 23°C . Dec: 29°C / 23°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 338 mm. Feb: 333 mm. Mar: 294 mm. Apr: 180 mm. May: 122 mm. Jun: 72 mm. Jul: 45 mm. Aug: 38 mm. Sep: 97 mm. Oct: 175 mm. Nov: 369 mm. Dec: 307 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 89%. Feb: 90%. Mar: 89%. Apr: 87%. May: 86%. Jun: 86%. Jul: 84%. Aug: 82%. Sep: 83%. Oct: 84%. Nov: 88%. Dec: 89%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 9 km/h . Feb: 8 km/h . Mar: 8 km/h . Apr: 8 km/h . May: 9 km/h . Jun: 10 km/h . Jul: 11 km/h . Aug: 12 km/h . Sep: 11 km/h . Oct: 10 km/h . Nov: 8 km/h . Dec: 9 km/h .
Sunshine
Sunshine
Sunshine: Jan: 8h. Feb: 8h. Mar: 9h. Apr: 10h. May: 10h. Jun: 10h. Jul: 10h. Aug: 11h. Sep: 11h. Oct: 11h. Nov: 9h. Dec: 8h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 8. Feb: UV 9. Mar: UV 8. Apr: UV 8. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 8. Sep: UV 9. Oct: UV 9. Nov: UV 9. Dec: UV 8.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending drier by about 50 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Mar 2025 · 30°C | Oct · 30°C |
| Coldest month | Jul 2025 · 21°C | Jul · 21°C |
| Wettest month | Nov 2025 · 398 mm | Nov · 369 mm |
| Windiest month | Aug 2025 · 11 km/h | Aug · 12 km/h |
Month-by-Month Weather Table
January
Wet 
February
Wet March
Wet April
Wet May
Fair June
Fair July best
Good August best
Good September
Fair October
Wet November
Wet December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 29°C / 23°C | 36°C / 28°C | 29days (338 mm) Wet | 7.8h Good | 89% Very Muggy | 8.1 Very High | Wet | View Details |
| February | 29°C / 23°C | 36°C / 28°C | 27days (333 mm) Wet | 8h Good | 90% Very Muggy | 8.8 Very High | Wet | View Details |
| March | 29°C / 23°C | 36°C / 28°C | 29days (294 mm) Wet | 9.1h Good | 89% Very Muggy | 8.4 Very High | Wet | View Details |
| April | 30°C / 23°C | 36°C / 28°C | 23days (180 mm) Wet | 9.9h Good | 87% Very Muggy | 8.4 Very High | Wet | View Details |
| May | 30°C / 23°C | 35°C / 27°C | 16days (122 mm) Wet | 10.1h Excellent | 86% Very Muggy | 7.2 Very High | Fair | View Details |
| June | 29°C / 22°C | 34°C / 26°C | 13days (72 mm) Wet | 10.2h Excellent | 86% Very Muggy | 6.7 High | Fair | View Details |
| July best | 28°C / 21°C | 32°C / 25°C | 10days (45 mm) Wet | 10.3h Excellent | 84% Humid | 7.1 Very High | Good | View Details |
| August best | 29°C / 21°C | 33°C / 25°C | 9days (38 mm) Wet | 10.6h Excellent | 82% Humid | 8.1 Very High | Good | View Details |
| September | 29°C / 22°C | 34°C / 26°C | 14days (97 mm) Wet | 10.7h Excellent | 83% Humid | 8.7 Very High | Fair | View Details |
| October | 30°C / 23°C | 36°C / 28°C | 20days (175 mm) Wet | 10.5h Excellent | 84% Humid | 9.2 Very High | Wet | View Details |
| November | 29°C / 23°C | 36°C / 28°C | 27days (369 mm) Wet | 8.7h Good | 88% Very Muggy | 8.5 Very High | Wet | View Details |
| December | 29°C / 23°C | 35°C / 28°C | 28days (307 mm) Wet | 8.3h Good | 89% Very Muggy | 8.3 Very High | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Jember are July, August, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Jember, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Jember is October, with average daytime highs of 30°C (86°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Jember is July, with average overnight lows of 21°C (70°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Jember is November, averaging 369mm of precipitation across 27 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Jember runs through January, March, December, February, with the heaviest rainfall in January. Based on 10-year averages for Jember.
Jember receives approximately 114 sunshine hours per year. The sunniest month is September with around 11 hours. Based on climate data for Jember.
The least favorable months to visit Jember are January, February, March, April, primarily due to extreme heat, heavy rainfall, oppressive humidity. For the best conditions, consider July, August instead.
The annual average UV index in Jember is 8, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Jember is 86%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Average wind speeds in Jember are 9 km/h (6 mph). The windiest month is August with peak winds reaching 12 km/h (7 mph) (gusts up to 32 km/h / 20 mph).
Jember averages 0 clear-sky days per month with overall cloud cover around 77%. The clearest skies occur in May.
The annual average dew point in Jember is 23°C (73°F), which feels muggy and uncomfortable. Expect heavy perspiration during warmer months — stay hydrated and take breaks in air-conditioned spaces.
Jember has a Tropical Monsoon climate, classified as Am under the Köppen system. Tropical climates are warm year-round with high rainfall and temperatures rarely dropping below 18°C (64°F).
The 'feels like' temperature in Jember ranges from 27°C (81°F) to 35°C (95°F) on average. Humidity and radiant heat mean it often feels warmer than the thermometer reads, especially in summer months.
June is not the best time to visit Jember, with a climate score of 5.7/10. Consider visiting during July, August instead for better conditions.
For June in Jember, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 29°C (84°F) and 13 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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