The best times to visit Dumai for ideal weather are

January 15th to March 4th

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 Dumai

Temperature

Average temperatures in Dumai vary barely at all. Considering humidity, temperatures feel hot all year with a chance of rain throughout most of the year. The area is far less temperate than some — in the 3rd 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 Dumai, the hottest months are May, June, and then April. See average monthly temperatures below. The warmest time of year is generally early to mid May where highs are regularly around 91.5°F (33.1°C) with temperatures rarely dropping below 76°F (24.4°C) at night.

Dumai Temperatures (Fahrenheit)

Key
High
Average
Low

Dumai 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.

Dumai Perceived Temperature (F)

Key
High
Average
Low

Dumai Perceived Temperature (C)

Key
High
Average
Low

 

Average Dumai 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 88.4 80.2 74.2
Feb 90.5 81.4 74.6
Mar 90.8 81.8 75.3
Apr 90.7 82.4 75.8
May 90.6 83 75.9
Jun 90 82.8 75.8
Jul 88.6 81.8 74.9
Aug 88.5 81.5 74.8
Sep 88.9 81.7 74.9
Oct 89.6 81.7 75.1
Nov 88.8 80.8 74.9
Dec 87.8 80.2 74.7

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 31.3 26.8 23.4
Feb 32.5 27.4 23.7
Mar 32.7 27.7 24.1
Apr 32.6 28 24.3
May 32.6 28.3 24.4
Jun 32.2 28.2 24.3
Jul 31.4 27.7 23.8
Aug 31.4 27.5 23.8
Sep 31.6 27.6 23.8
Oct 32 27.6 23.9
Nov 31.6 27.1 23.8
Dec 31 26.8 23.7


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Dumai are February, January, and then June. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late January. For example, on the week of January 22nd there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in late October to early November with an average of 4 days of significant precipitation the week of October 29th.

When can you find snow in Dumai? 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 Dumai.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Dumai (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 19% 0 4.3
Feb 16% 0 3.2
Mar 31% 0 4.2
Apr 34% 0 6.5
May 27% 0 5.6
Jun 22% 0 5.9
Jul 31% 0 7.3
Aug 37% 0 8.6
Sep 28% 0 6.2
Oct 32% 0 8.1
Nov 47% 0 10
Dec 33% 0 7.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 19 0 10.9
Feb 16 0 8.1
Mar 31 0 10.7
Apr 34 0 16.5
May 27 0 14.2
Jun 22 0 15
Jul 31 0 18.5
Aug 37 0 21.8
Sep 28 0 15.7
Oct 32 0 20.6
Nov 47 0 25.4
Dec 33 0 18

 

Humidity and Wind

Dumai has some very humid months, and high humidity throughout the year. The least humid month is February (71.8% relative humidity), and the most humid month is November (80.9%).

Wind in Dumai is usually extremely calm. The windiest month is January, followed by February and December. January’s average wind speed of around 5.7 knots (6.5 MPH or 10.5 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late January and early February where average top sustained speeds reach 10.9 knots, which is considered a gentle breeze.

Relative Humidity (%)

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

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 5.7 Light breeze 10.1 Gentle breeze
Feb 5.6 Light breeze 10.2 Gentle breeze
Mar 4.3 Light breeze 8.8 Gentle breeze
Apr 3.5 Barely noticeable 7.9 Gentle breeze
May 3.3 Barely noticeable 7.5 Gentle breeze
Jun 3.3 Barely noticeable 7.7 Gentle breeze
Jul 3.2 Barely noticeable 7.6 Gentle breeze
Aug 3.4 Barely noticeable 7.9 Gentle breeze
Sep 3.3 Barely noticeable 7.7 Gentle breeze
Oct 3.3 Barely noticeable 7.8 Gentle breeze
Nov 3.3 Barely noticeable 7.8 Gentle breeze
Dec 4.3 Light breeze 8.6 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 74.2%
Feb 71.8%
Mar 75.5%
Apr 77.5%
May 77.1%
Jun 76.5%
Jul 77.9%
Aug 78.3%
Sep 77.8%
Oct 77.6%
Nov 80.9%
Dec 79.7%

 

Is it Safe to Travel to Dumai?

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 Dumai, Indonesia is December, followed by November and January. 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 Dumai in February. 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 42 in February means 42% of the tourists vs. December.


Overall Dumai Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel warm. Highs range from 91.5°F (33.1°C) and 90.2°F (32.3°C) with similar temperatures in the later months. Rain is somewhat common with 8 to 10 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see moderate precipitation with 6 to 12 days of precipitation per month. June – August is the slowest season for tourism in Dumai, so lodging and other accommodations may cost less than usual.

Fall (September through November)

Fall daily highs range from 90.2°F (32.3°C) and 88.3°F (31.3°C), which will feel very nice given the humidity and wind. It rains or snows a good amount: 8 to 14 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Winter (December through February)

Weather is perfect this time of year in Dumai to be enjoyable for warm weather travelers. The average high during this season is between 91.3°F (32.9°C) and 87.3°F (30.7°C). On average, it rains or snows a fair amount: 4 to 10 times per month. These times of year are the busiest with tourists.

 

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