Climate averages 1991–2020

Sidoarjo weather
in May.

A hot, moderately wet month: the joint 6th warmest and the 6th driest of the year.

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

Average high 30.9°C Daytime mean, May
Average low 23.6°C Night-time mean, May
Rainfall 49 mm 10 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Sidoarjo · average highYear overview

May is a hot month in Sidoarjo: daytime highs average 30.9°C and nights cool to about 23.6°C. By daytime temperature it is the joint 6th warmest of the 12 months.

Expect about 49 mm of rain on roughly 10 days, which makes May a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 47 min on an average May day.

The nearest other city in this atlas is Bangil (20 km away). In May its highs average 30.3°C, 0.5°C cooler than Sidoarjo, with 49 mm of rain.

Among the 200 cities listed in Indonesia, Sidoarjo ranks joint 2nd of 200 for the warmest May highs and joint 7th of 200 for the driest May (rainfall, lowest first). The mean May high of those 200 cities is 29.2°C; Sidoarjo is 1.7°C warmer than that mean.

From May to June, average highs rise by 0.1°C to 30.9°C, and monthly rainfall falls from 49 mm to 24 mm.

The annual picture

May 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. 2025303540 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 3000

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

Every month, side by side

Sidoarjo climate table

1991–2020
Monthly climate averages for Sidoarjo, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 29.6°C23.7°C23.7°C29828.912.513 h
February 29.5°C23.6°C23.6°C28027.312.312 h
March 29.8°C23.6°C23.6°C25327.812.112 h
April 30.1°C23.7°C23.7°C14421.211.912 h
May, selected 30.9°C23.6°C23.6°C4910.111.812 h
June 30.9°C23.1°C23.1°C246.311.712 h
July 31.2°C22.4°C22.4°C123.011.712 h
August 32.1°C22.4°C22.4°C3.71.411.912 h
September 33.3°C23.1°C23.1°C112.712.112 h
October 33.6°C24.0°C24.0°C388.012.312 h
November 32.1°C24.5°C24.5°C11718.412.412 h
December 30.2°C24.0°C24.0°C25327.512.513 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

May in nearby cities

Distance from Sidoarjo

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 Sidoarjo) is explained once on the Sidoarjo year overview and on the Sources, method and limits page.

Bangil lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.