The best times to visit Mannar for ideal weather are

May 28th to September 16th

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



Other Mannar Travel Info

Weather in Mannar


Average temperatures in Mannar vary very little. Considering humidity, temperatures feel hot all year with a low chance of precipitation most of the year. The area is less temperate than some — in the 21st 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 Mannar, the hottest months are May, June, and then April. See average monthly temperatures below. The warmest time of year is generally late May where highs are regularly around 91.5°F (33.1°C) with temperatures rarely dropping below 82.3°F (27.9°C) at night.

Mannar Temperatures (Fahrenheit)


Mannar Temperatures (Celsius)


“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.

Mannar Perceived Temperature (F)


Mannar Perceived Temperature (C)



Average Mannar 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 84.1 79.6 75
Feb 86.3 80.7 75
Mar 90.2 83.5 76.2
Apr 90.9 84.8 78.1
May 89.7 85.6 81.2
Jun 88.7 85 81.5
Jul 88.3 84 80.1
Aug 87.7 83.3 79.4
Sep 87.7 83.5 79.3
Oct 87.6 82.8 77.8
Nov 85.5 81.2 76.3
Dec 83.6 79.7 75.4

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 28.9 26.4 23.9
Feb 30.2 27.1 23.9
Mar 32.3 28.6 24.6
Apr 32.7 29.3 25.6
May 32.1 29.8 27.3
Jun 31.5 29.4 27.5
Jul 31.3 28.9 26.7
Aug 30.9 28.5 26.3
Sep 30.9 28.6 26.3
Oct 30.9 28.2 25.4
Nov 29.7 27.3 24.6
Dec 28.7 26.5 24.1



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Mannar are June, July, and then August. 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 are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late November to early December with an average of 3 days of significant precipitation the week of November 26th.

When can you find snow in Mannar? 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.

Chance of Precipitation

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

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 12% 0 2.3
Feb 8% 0 1.2
Mar 4% 0 1.5
Apr 16% 0 4.1
May 11% 0 2.3
Jun 0% 0 0
Jul 0% 0 0
Aug 4% 0 1.4
Sep 8% 0 2.5
Oct 22% 0 4.9
Nov 38% 0 11.7
Dec 40% 0 11.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 12 0 5.8
Feb 8 0 3
Mar 4 0 3.8
Apr 16 0 10.4
May 11 0 5.8
Jun 0 0 0
Jul 0 0 0
Aug 4 0 3.6
Sep 8 0 6.4
Oct 22 0 12.4
Nov 38 0 29.7
Dec 40 0 28.2


Humidity and Wind

Mannar has some extremely humid months, and high humidity throughout the year. The least humid month is March (70.5% relative humidity), and the most humid month is December (81.8%).

Wind in Mannar is usually moderate. The windiest month is June, followed by May and July. June’s average wind speed of around 11.1 knots (12.8 MPH or 20.6 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late May to early June where average top sustained speeds reach 15.8 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

Avg. Relative Humidity


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

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 7 Gentle breeze 10.3 Gentle breeze
Feb 6.4 Light breeze 9.6 Gentle breeze
Mar 4.5 Light breeze 7.7 Gentle breeze
Apr 3.8 Barely noticeable 6.7 Light breeze
May 9.7 Gentle breeze 12.7 Gentle breeze
Jun 11.1 Significant breeze 14.4 Significant breeze
Jul 9.6 Gentle breeze 12.5 Gentle breeze
Aug 9.3 Gentle breeze 12.2 Significant breeze
Sep 8.9 Gentle breeze 12.6 Gentle breeze
Oct 4.9 Light breeze 8.5 Gentle breeze
Nov 4.2 Light breeze 7.5 Gentle breeze
Dec 6 Light breeze 9.3 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 75.7%
Feb 72.7%
Mar 70.5%
Apr 73.5%
May 75.3%
Jun 74.2%
Jul 74.3%
Aug 76.3%
Sep 76.8%
Oct 77.6%
Nov 80.7%
Dec 81.8%


Is it Safe to Travel to Mannar?

Our best data indicates this area is somewhat safe. As of Oct 07, 2019 there are travel warnings for Sri Lanka; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 25, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Mannar, Sri Lanka is August, followed by January and February. 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 Mannar in May. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

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 30.7 in May means 30.7% of the tourists vs. August.



Overall Mannar 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 88.2°F (31.2°C) with similar temperatures in the later months. Rain is rare with 1 to 5 days of significant precipitation per month. Spring is the slowest for tourism, which makes it a good time for those looking for deals.

Summer (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 0 to 1 days of precipitation per month. June – August is the busiest season for tourism in Mannar, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 88.1°F (31.2°C) and 83.7°F (28.7°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 2 to 11 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 Mannar to be enjoyable for warm weather travelers. The average high during this season is between 88.2°F (31.2°C) and 82.8°F (28.2°C). On average, it rains or snows a fair amount: 2 to 12 times per month. These times of year are the second busiest with tourists.


Best Times to TravelSri Lanka › Mannar, Sri Lanka