What is the weather like in Jakarta in September?

Expect temperatures between 24°C and 32°C with 27% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Jakarta in September?

Jakarta in September scores 61/100 based on 30 years of climate data. A reasonable choice for your trip.

Who should visit Jakarta in September?

September in Jakarta is ideal for: Beach lovers, Business travelers.

Jakarta Weather in September | 30-Year Forecast

Avg High

32°C

Hottest around day 23

Avg Low

24°C

Coolest around day 11

Rainy Days

20days

27% avg rain chance

Sunshine

8hrs/day

Autumn season

Sea Temperature in September

Java Sea(Laut Jawa)

29.9°C

Monthly Average

Water Feel

🌴Tropical

Perfect for swimming and water sports

Swim Rating

✅Excellent for swimming

Based on average sea surface temperature

Body of Water

Java Sea

Laut Jawa

Jakarta coastline

Essential Travel Info for Jakarta

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

IDR

Rp Indonesian rupiah

Language

Indonesian

Driving

Left side

Connect

The area code for Jakarta and the metrop...

Safety

High Safety

GPI: 1.8

Travel Intelligence

Exclusive flight analytics & health data for Jakarta

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Major Hub

81/ 100

Traffic Index

Extremely busy airport

Peak Daily Arrivals

slots per day

Peak

Mar

Low

Apr

Monthly Traffic Distribution

614

Jan

621

Feb

624

Mar

484

Apr

490

May

561

Jun

587

Jul

568

Aug

555

Sep

564

Oct

564

Nov

590

Dec

Traffic Level

Low Season

Key Connections

Denpasar-Bali Island Ngurah Rai (Bali) (DPS)

Surabaya Juanda (SUB)

Singapore Changi (SIN)

Ujung Pandang-Celebes Island Hasanuddin (UPG)

Kuala Lumpur (KUL)

Health & Safety Advisory

CDC travel health recommendations

11 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Chikungunya

All travelers should take steps to prevent mosquito bites. Chikungunya vaccination is generally not recommended. Travelers who wish to consider vaccination can visit “What to consider before traveling” on thechikungunya vaccinespage to learn more.

Hepatitis A

Recommended for unvaccinated travelers one year old or older going to Indonesia.Infants 6 to 11 months old should also be vaccinated against Hepatitis A. The dose does not count toward the routine 2-dose series.Travelers allergic to a vaccine component should receive a single dose of immune globulin, which provides effective protection for up to 2 months depending on dosage given.Unvaccinated travelers who are over 40 years old, are immunocompromised, or have chronic medical conditions planning to depart to a risk area in less than 2 weeks should get the initial dose of vaccine and at the same appointment receive immune globulin.

Hepatitis B

Recommended for unvaccinated travelers of all ages traveling to Indonesia.

Japanese Encephalitis

Recommended for travelers whoAre moving to an area with Japanese encephalitis to liveSpend long periods of time, such as a month or more, in areas with Japanese encephalitisFrequently travel to areas with Japanese encephalitisConsider vaccination for travelersSpending less than a month in areas with Japanese encephalitis but will be doing activities that increase risk of infection, such as visiting rural areas, hiking or camping, or staying in places without air conditioning, screens, or bed netsGoing to areas with Japanese encephalitis who are uncertain of their activities or how long they will be thereNot recommended for travelers planning short-term travel to urban areas or travel to areas with no clear Japanese encephalitis season.

Malaria

CDC recommends that travelers going to certain areas of Indonesia take prescription medicine to prevent malaria. Depending on the medicine you take, you will need to start taking this medicine multiple days before your trip, as well as during and after your trip. Talk to your doctor about which malaria medication you should take.Transmission areasAll areas of eastern Indonesia (the provinces of Maluku, North Maluku, East Nusa Tenggara, Papua, and West Papua), including the town of Labuan Bajo and the Komodo Islands in the Nusa Tenggara regionRural areas of Kalimantan (Borneo), West Nusa Tenggara (includes the island of Lombok), Sulawesi, and SumatraLow transmission in rural areas of Java, including Pangandaran, Sukabumi, and Ujung KulonNo malaria transmission in the cities of Jakarta (the capital) or UbudNo malaria transmission in the resort areas of Bali or Java, the Gili Islands, or the Thousand Islands (Pulau Seribu)Drug resistanceChloroquine (P. falciparumandP. vivax)SpeciesP. falciparum(60%)P. vivax(40%)P. knowlesi,6P. malariae, andP. ovale(rare)Recommended chemoprophylaxisAtovaquone-proguanil, doxycycline, mefloquine, tafenoquine3Updated April 23, 2025See footnotes

+5 more

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Jakarta?

👌A reasonable choice for your trip(61/100)

Short Answer

September brings oppressive conditions to Jakarta: 32°C highs feel like 42°C due to 74% humidity. Only recommended for heat-tolerant travelers willing to limit outdoor activities during peak afternoon hours.

Decision Factors

Very hot conditions

32°C average highs - limit midday exposure

Vaccinations required

Yellow Fever

Feels significantly hotter than 32°C

Heat index: 42°C due to 74% humidity

Warm tropical seas

29.9°C sea temperature - Hot Soup

Seismically active region

9 earthquakes recorded in this month (30-year data)

Peak tourist season

89% of annual peak - expect crowds and high prices

Good For

🏖️
Beach lovers
29.9°C warm seas and 27% rain probability
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

💰
Budget travelers
Peak season means premium prices everywhere
👨‍👩‍👧‍👦
Families with children
42°C heat index dangerous for children
👴
Elderly travelers
Heat index of 42°C poses health risks
🥾
Outdoor enthusiasts
Extreme conditions limit outdoor activity options

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Jakarta in September averages 32°C with 27% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Jakarta in September

What are the temperatures in Jakarta in September?

Daytime highs average 32°C, nights drop to 24°C. Temperatures remain fairly consistent.

How many rainy days in Jakarta in September?

Expect around 20 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Jakarta in September?

Light, breathable fabrics. Don't forget sunglasses and a hat.

Is September peak season in Jakarta?

This is shoulder season—moderate prices and manageable crowds.

Jakarta Weather in September