How extreme does Cilegon's weather get?

The hottest, coldest, wettest and snowiest days Cilegon has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 34 years of daily weather observations (1991–present), from the Serang station 14 km away. Updated through March 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Cilegon has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

113°F Oct 19, 1993

That is about 21°F hotter than a normal October afternoon in Cilegon (typical high near 91°F).

The three most extreme on record

1 113°F Oct 19, 1993

2 104°F Sep 15, 1991

3 103°F Oct 16, 2000

❄️ Coldest night

57°F Dec 20, 2003

About 18°F colder than a normal December night in Cilegon (typical low near 75°F).

The three most extreme on record

1 57°F Dec 20, 2003

2 58°F Jul 9, 1994

3 58°F Aug 14, 1994

🌧️ Most rain in one day

6.30 in Mar 26, 1997

More rain in a single day than Cilegon usually gets in the whole month of March (typical March total about 4.5 in).

The three most extreme on record

1 6.30 in Mar 26, 1997

2 4.92 in Jan 21, 2019

3 4.09 in Mar 5, 1997

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

normal range of daily temperatureshottest ever recordedcoldest ever recorded

Cilegon's record heat sits well above even a hot day for the season — October's 113°F is about 21°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Cilegon's warmest days reach the low 90s°F and its coldest nights drop to the low 70s°F. But across the record it has gone as high as 113°F and as low as 57°F. A single day has delivered over 6 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Serang, a weather station, about 14 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →

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