Climate averages 1991–2020

Pelabuhanratu weather
in September.

A hot, wet month: the warmest and the 4th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 30.8°C Daytime mean, September
Average low 23.0°C Night-time mean, September
Rainfall 123 mm 12 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Pelabuhanratu · average highYear overview

September is a hot month in Pelabuhanratu: daytime highs average 30.8°C and nights cool to about 23.0°C. By daytime temperature it is the warmest month of the year.

Expect about 123 mm of rain on roughly 12 days, which makes September a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 04 min on an average September day.

The nearest other city in this atlas is Cicurug (34 km away). In September its highs average 29.7°C, 1.0°C cooler than Pelabuhanratu, with 153 mm of rain.

Among the 200 cities listed in Indonesia, Pelabuhanratu ranks joint 77th of 200 for the warmest September highs and joint 137th of 200 for the driest September (rainfall, lowest first). The mean September high of those 200 cities is 30.1°C; Pelabuhanratu is 0.7°C warmer than that mean.

From September to October, average highs fall by 0.3°C to 30.5°C, and monthly rainfall rises from 123 mm to 257 mm.

The annual picture

September in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 20253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 4500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Pelabuhanratu climate table

1991–2020
Monthly climate averages for Pelabuhanratu, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 28.9°C23.7°C23.7°C39029.312.512 h
February 29.2°C23.8°C23.8°C35026.812.312 h
March 29.6°C23.9°C23.9°C36229.212.112 h
April 30.0°C24.0°C24.0°C29726.612.012 h
May 30.3°C23.9°C23.9°C19721.811.812 h
June 30.1°C23.3°C23.3°C11715.711.712 h
July 30.0°C22.8°C22.8°C10212.211.812 h
August 30.4°C22.6°C22.6°C739.611.912 h
September, selected 30.8°C23.0°C23.0°C12312.412.112 h
October 30.5°C23.6°C23.6°C25720.812.312 h
November 29.6°C23.8°C23.8°C41826.312.412 h
December 28.8°C23.8°C23.8°C45028.912.513 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

September in nearby cities

Distance from Pelabuhanratu

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Pelabuhanratu) is explained once on the Pelabuhanratu year overview and on the Sources, method and limits page.