The best times to visit Cilegon for ideal weather are

July 23rd to October 21st

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

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Weather in Cilegon

Temperature

Average temperatures in Cilegon vary barely at all. Considering humidity, temperatures feel hot all year with a fair chance of precipitation about half of the year. The area is less temperate than some — in the 12th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Cilegon, the hottest months are October, May, and then April. See average monthly temperatures below. The warmest time of year is generally mid October where highs are regularly around 91.9°F (33.3°C) with temperatures rarely dropping below 74°F (23.3°C) at night.

Cilegon Temperatures (Fahrenheit)

Key
High
Average
Low

Cilegon Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Cilegon Perceived Temperature (F)

Key
High
Average
Low

Cilegon Perceived Temperature (C)

Key
High
Average
Low

 

Average Cilegon Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 87.2 80.1 74.5
Feb 87.5 80.3 74.4
Mar 88.7 81 74.7
Apr 89.8 81.5 75
May 89.8 81.5 74.6
Jun 89.4 80.9 74
Jul 89.4 80.4 72.7
Aug 90 80.9 72.7
Sep 91.3 81.3 72.4
Oct 91.3 81.7 73.9
Nov 90.2 81.1 74.5
Dec 88.5 80.9 74.9

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 30.7 26.7 23.6
Feb 30.8 26.8 23.6
Mar 31.5 27.2 23.7
Apr 32.1 27.5 23.9
May 32.1 27.5 23.7
Jun 31.9 27.2 23.3
Jul 31.9 26.9 22.6
Aug 32.2 27.2 22.6
Sep 32.9 27.4 22.4
Oct 32.9 27.6 23.3
Nov 32.3 27.3 23.6
Dec 31.4 27.2 23.8


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Cilegon are August, September, and then July. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid to late August. For example, on the week of August 20th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid January with an average of 3 days of significant precipitation the week of January 8th.

When can you find snow in Cilegon? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chanceof Precipitation

The graph below shows the % chance of rainy and snowy days in Cilegon.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Cilegon (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 37% 0 7.4
Feb 35% 0 6
Mar 21% 0 4.5
Apr 21% 0 3.9
May 18% 0 3.8
Jun 12% 0 1.9
Jul 10% 0 1.9
Aug 5% 0 0.9
Sep 10% 0 2.1
Oct 13% 0 2.4
Nov 21% 0 4.5
Dec 24% 0 3.8

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 37 0 18.8
Feb 35 0 15.2
Mar 21 0 11.4
Apr 21 0 9.9
May 18 0 9.7
Jun 12 0 4.8
Jul 10 0 4.8
Aug 5 0 2.3
Sep 10 0 5.3
Oct 13 0 6.1
Nov 21 0 11.4
Dec 24 0 9.7

 

Humidity and Wind

Cilegon has some very humid months, and above average humidity throughout the year. The least humid month is September (68% relative humidity), and the most humid month is February (79.5%).

Wind in Cilegon is usually extremely calm. The windiest month is January, followed by March and December. January’s average wind speed of around 3 knots (3.5 MPH or 5.6 KPH) is considered “light air.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early January where average top sustained speeds reach 8.6 knots, which is considered a gentle breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Cilegon.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 3 Barely noticeable 7.8 Gentle breeze
Feb 2.4 Barely noticeable 7.1 Gentle breeze
Mar 2.7 Barely noticeable 7.4 Gentle breeze
Apr 2.2 Barely noticeable 6.7 Light breeze
May 1.7 Barely noticeable 6.2 Gentle breeze
Jun 1.6 Barely noticeable 6 Light breeze
Jul 1.7 Barely noticeable 6.2 Gentle breeze
Aug 2.1 Barely noticeable 7 Gentle breeze
Sep 2 Barely noticeable 7 Gentle breeze
Oct 2.1 Barely noticeable 7.1 Gentle breeze
Nov 2.1 Barely noticeable 6.5 Gentle breeze
Dec 2.7 Barely noticeable 7.1 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 78%
Feb 79.5%
Mar 77.3%
Apr 77%
May 76.9%
Jun 76.3%
Jul 73.5%
Aug 70.5%
Sep 68%
Oct 70.2%
Nov 74.4%
Dec 76.4%

 

Is it Safe to Travel to Cilegon?

Our best data indicates this area is somewhat safe, but with extra warnings in a few regions. As of Jan 18, 2018 there are travel warnings and regional advisories for Indonesia; exercise a high degree of caution and avoid some areas. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories


 

The Busiest and Least Crowded Months

The busiest month for tourism in Cilegon, Indonesia is January, followed by September and August. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Cilegon in April. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 60.3 in April means 60.3% of the tourists vs. January.


Overall Cilegon Travel Experience by Season

Fall (March through May)

Humidity and temperatures combine to make this season feel warm. Highs range from 90.2°F (32.3°C) and 87.8°F (31°C) with similar temperatures in the later months. Rain is somewhat common with 6 to 7 days of significant precipitation per month. Fall is the slowest for tourism, which makes it a good time for those looking for deals.

Winter (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the least precipitation with 2 to 4 days of precipitation per month. June – August is fairly slow season for tourism in Cilegon, so lodging and other accommodations may cost slightly less.

Spring (September through November)

Spring daily highs range from 91.9°F (33.3°C) and 89.9°F (32.2°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 3 to 6 days per month. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.

Summer (December through February)

Weather is perfect this time of year in Cilegon to be enjoyable for warm weather travelers. The average high during this season is between 89.1°F (31.7°C) and 86.7°F (30.4°C). On average, it rains or snows a fair amount: 8 to 11 times per month. These times of year are the busiest with tourists.

 

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