The best times to visit Si Racha 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 Si Racha Travel Info

Weather in Si Racha


Average temperatures in Si Racha 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 16th 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 Si Racha, the hottest months are May, April, and then June. See average monthly temperatures below. The warmest time of year is generally early May where highs are regularly around 93.1°F (33.9°C) with temperatures rarely dropping below 81°F (27.2°C) at night.

Si Racha Temperatures (Fahrenheit)


Si Racha 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.

Si Racha Perceived Temperature (F)


Si Racha Perceived Temperature (C)



Average Si Racha 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 89.7 82.4 72.5
Feb 89.8 83.2 75.2
Mar 89.8 84 77.2
Apr 92.5 86 78.9
May 92.5 87 80.7
Jun 89.5 85 79.5
Jul 88.7 84.2 79.1
Aug 89.6 84.2 78
Sep 89.1 83.4 77.2
Oct 88.9 83.2 75.9
Nov 90.9 84.4 76.5
Dec 90.1 83.3 73.6

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 32.1 28 22.5
Feb 32.1 28.4 24
Mar 32.1 28.9 25.1
Apr 33.6 30 26.1
May 33.6 30.6 27.1
Jun 31.9 29.4 26.4
Jul 31.5 29 26.2
Aug 32 29 25.6
Sep 31.7 28.6 25.1
Oct 31.6 28.4 24.4
Nov 32.7 29.1 24.7
Dec 32.3 28.5 23.1



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Si Racha are January, December, 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 Si Racha? 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 Si Racha.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Si Racha (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 0.2
Feb 6% 0 1
Mar 6% 0 1.3
Apr 13% 0 2.6
May 17% 0 3.2
Jun 33% 0 7.9
Jul 24% 0 3.7
Aug 27% 0 4.9
Sep 40% 0 7.5
Oct 36% 0 9
Nov 12% 0 1.9
Dec 5% 0 0.5

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 3 0 0.5
Feb 6 0 2.5
Mar 6 0 3.3
Apr 13 0 6.6
May 17 0 8.1
Jun 33 0 20.1
Jul 24 0 9.4
Aug 27 0 12.4
Sep 40 0 19.1
Oct 36 0 22.9
Nov 12 0 4.8
Dec 5 0 1.3


Humidity and Wind

Si Racha has some very humid months, with other comfortably humid months. The least humid month is January (53.8% relative humidity), and the most humid month is October (73.7%).

Wind in Si Racha is usually moderate. The windiest month is June, followed by July and August. June’s average wind speed of around 9.5 knots (10.9 MPH or 17.6 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid June where average top sustained speeds reach 15.2 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

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 5.8 Light breeze 9.6 Gentle breeze
Feb 7.2 Gentle breeze 11.8 Significant breeze
Mar 8.3 Gentle breeze 13 Gentle breeze
Apr 6.9 Light breeze 11.8 Significant breeze
May 7.7 Gentle breeze 12.4 Gentle breeze
Jun 9.5 Gentle breeze 13.8 Significant breeze
Jul 9.5 Gentle breeze 13.7 Gentle breeze
Aug 8.4 Gentle breeze 12.7 Significant breeze
Sep 6.5 Light breeze 10.7 Gentle breeze
Oct 4.3 Light breeze 8.4 Gentle breeze
Nov 4.7 Light breeze 8.4 Gentle breeze
Dec 5.9 Light breeze 9.7 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 53.8%
Feb 66%
Mar 68.3%
Apr 67%
May 66.1%
Jun 69.7%
Jul 70%
Aug 69.6%
Sep 73.6%
Oct 73.7%
Nov 64.2%
Dec 54.3%


Is it Safe to Travel to Si Racha?

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 Si Racha, 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 Si Racha 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 Si Racha Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel very warm. Highs range from 93.1°F (33.9°C) and 88.4°F (31.3°C) with warmer temperatures in the later months. Rain is rare with 2 to 5 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 7 to 10 days of precipitation per month. June – August is the second busiest season for tourism in Si Racha, so lodging and other accommodations may cost slightly more.

Fall (September through November)

Fall daily highs range from 91.8°F (33.2°C) and 87.3°F (30.7°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 4 to 12 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 Si Racha to be enjoyable for warm weather travelers. The average high during this season is between 91°F (32.8°C) and 87.6°F (30.9°C). On average, it rains or snows a smalll amount: 1 to 2 times per month. These times of year are the busiest with tourists.


Best Times to TravelThailand › Si Racha, Thailand