The best times to visit Dumai for ideal weather are
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Dumai Travel Guide
Weather in Dumai
Average temperatures in Dumai vary barely at all and are too warm to be considered temperate for most. The area is in the bottom 1 percent of tourist destinations for pleasant weather. 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 75.9°F (24.4°C) at night.
Dumai Temperatures (Fahrenheit)
Dumai Temperatures (Celsius)
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)
Dumai Perceived Temperature (C)
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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
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.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Dumai.
Snow on the Ground
The graph below shows the average snow on the ground in Dumai (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Dumai has above average humidity compared to most tourist destinations. The least humid month is February (76.3% relative humidity), and the most humid month is November (83.5%).
Wind in Dumai is usually calm. The windiest month is March, followed by April and February. March’s average wind speed of around 2.6 knots (3 MPH or 4.8 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 mid-April where average top sustained speeds reach 7.7 knots, which is considered a gentle breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Dumai.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots.
|Month||Avg. Wind||Meaning (Beaufort)||Avg. Maximum Sustained Wind||Meaning (Beufort)|
|Jan||2.2||light air||6.2||a light breeze|
|Feb||2.5||light air||7.1||a gentle breeze|
|Mar||2.6||light air||7.3||a light breeze|
|Apr||2.6||light air||7.5||a gentle breeze|
|May||2.4||light air||7||a light breeze|
|Jun||2.4||light air||6.6||a light breeze|
|Jul||2.4||light air||6.8||a light breeze|
|Aug||2.4||light air||7||a gentle breeze|
|Sep||2.4||light air||6.8||a light breeze|
|Oct||2.4||light air||6.9||a light breeze|
|Nov||2.2||light air||6.7||a light breeze|
|Dec||2.1||light air||6||a light breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Dumai?
As of 6/27/2017 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.
Overall Dumai Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel very warm. Highs range from 91.5°F (33.1°C) and 90.2°F (32.3°C) with warmer temperatures in the later months. Spring is slow/unreported for tourism, which makes it a good time for those looking for deals.
Summer (June through August)
The middle-year months have hot weather with high temperatures that are quite warm. June – August is slow/unreported season for tourism in Dumai, so lodging and other accommodations may cost as much as usual.
Fall (September through November)
Fall daily highs range from 89.9°F (32.2°C) and 88.3°F (31.3°C), which will feel warmer than comfortable given the humidity and wind. Tourism is slow/unreported during these months due to the weather, so hotels may be normally 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 90.6°F (32.6°C) and 87.8°F (31°C). These times of year are slow/unreported with tourists.