The best times to visit Ko Sichang for ideal weather are

November 19th to March 25th

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



Other Ko Sichang Travel Info

Weather in Ko Sichang


Average temperatures in Ko Sichang vary very little. 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 14th 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 Ko Sichang, the hottest months are May, April, and then June. See average monthly temperatures below. The warmest time of year is generally mid April where highs are regularly around 92.1°F (33.4°C) with temperatures rarely dropping below 81.3°F (27.4°C) at night.

Ko Sichang Temperatures (Fahrenheit)


Ko Sichang 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.

Ko Sichang Perceived Temperature (F)


Ko Sichang Perceived Temperature (C)



Average Ko Sichang 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 86.7 79.6 72.1
Feb 87.8 81.8 75.7
Mar 89.7 83.8 78.2
Apr 91.5 85.6 79.9
May 91.2 86 80.1
Jun 90.1 85.2 79.5
Jul 89.2 84.2 78.8
Aug 89 84 78.1
Sep 88.3 83.1 77
Oct 88.7 82 75.7
Nov 88.4 81.8 75.1
Dec 87.3 80.3 73

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 30.4 26.4 22.3
Feb 31 27.7 24.3
Mar 32.1 28.8 25.7
Apr 33.1 29.8 26.6
May 32.9 30 26.7
Jun 32.3 29.6 26.4
Jul 31.8 29 26
Aug 31.7 28.9 25.6
Sep 31.3 28.4 25
Oct 31.5 27.8 24.3
Nov 31.3 27.7 23.9
Dec 30.7 26.8 22.8



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Ko Sichang are December, January, and then February. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early October with an average of 4 days of significant precipitation the week of October 1st.

When can you find snow in Ko Sichang? 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 Ko Sichang.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 3% 0 0.9
Feb 4% 0 0.6
Mar 6% 0 1.2
Apr 16% 0 3.3
May 25% 0 5.2
Jun 29% 0 5.2
Jul 33% 0 5.8
Aug 32% 0 5.4
Sep 44% 0 9.4
Oct 40% 0 9.1
Nov 12% 0 1.9
Dec 2% 0 0.2

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 3 0 2.3
Feb 4 0 1.5
Mar 6 0 3
Apr 16 0 8.4
May 25 0 13.2
Jun 29 0 13.2
Jul 33 0 14.7
Aug 32 0 13.7
Sep 44 0 23.9
Oct 40 0 23.1
Nov 12 0 4.8
Dec 2 0 0.5


Humidity and Wind

Ko Sichang has some very humid months, and above average humidity throughout the year. The least humid month is December (65.2% relative humidity), and the most humid month is October (80.1%).

Wind in Ko Sichang is usually extremely calm. The windiest month is December, followed by November and July. December’s average wind speed of around 3.6 knots (4.2 MPH or 6.7 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 August where average top sustained speeds reach 9.4 knots, which is considered a gentle breeze.

Relative Humidity (%)

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

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 3.3 Barely noticeable 7.9 Gentle breeze
Feb 2.4 Barely noticeable 6.9 Light breeze
Mar 2.8 Barely noticeable 7.3 Gentle breeze
Apr 2.4 Barely noticeable 7.1 Gentle breeze
May 2.6 Barely noticeable 7.3 Gentle breeze
Jun 3.3 Barely noticeable 7.8 Gentle breeze
Jul 3.4 Barely noticeable 8.2 Gentle breeze
Aug 2.9 Barely noticeable 8 Gentle breeze
Sep 2.4 Barely noticeable 7.3 Gentle breeze
Oct 2.1 Barely noticeable 6.5 Light breeze
Nov 3.6 Barely noticeable 7.7 Gentle breeze
Dec 3.6 Barely noticeable 7.9 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 65.8%
Feb 72.8%
Mar 71.9%
Apr 72%
May 71.9%
Jun 72.7%
Jul 73.5%
Aug 74.1%
Sep 78.5%
Oct 80.1%
Nov 70.1%
Dec 65.2%


Is it Safe to Travel to Ko Sichang?

Our best data indicates this area is somewhat safe, but with extra warnings in a few regions. As of Dec 04, 2023 there are travel warnings and regional advisories for Thailand; 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. This advisory was last updated on Nov 27, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Ko Sichang, Thailand is December, followed by May 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 Ko Sichang in September. 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 slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 65.1 in September means 65.1% of the tourists vs. December.



Overall Ko Sichang Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel very warm. Highs range from 92.1°F (33.4°C) and 89.1°F (31.7°C) with similar temperatures in the later months. Rain is somewhat common with 2 to 8 days of significant precipitation per month. Spring is fairly slow 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 moderate precipitation with 9 to 10 days of precipitation per month. June – August is the second busiest season for tourism in Ko Sichang, so lodging and other accommodations may cost slightly more.

Fall (September through November)

Fall daily highs range from 89.7°F (32.1°C) and 87.4°F (30.8°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 4 to 13 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is perfect this time of year in Ko Sichang 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 smalll amount: consistently 1 times per month. These times of year are the busiest with tourists.


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