AI-generatedSi Racha at a glance
- Best time
- Dec – Feb
- Warmest month
- Apr · 34°
- Warmest sea
- May · 30.7°
- Sunshine a year
- 2,400 h
- Rain a year
- 1,253 mm
- Climate
- Tropical
- Time zone
- UTC+7
- Elevation
- 0 m
Climate in Si Racha
Si Racha has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. April is the warmest month with average highs of 34 °C, while December is the coolest at 31 °C. With around 2,400 hours of sunshine a year, Si Racha is sunny; March is the sunniest month with 8.1 hours a day.
Holiday weather through the year
Best time to visit Si Racha
The best time to visit Si Racha is from December to February. For a beach holiday – sea from 21 °C, warm and mostly dry – go from November to March. From April to May it can get very hot, with highs of up to 34 °C. The rainy season is from May to October; the wettest month is September with 236 mm.
Si Racha through the seasons
How the weather changes over the seasons, with averages for each.
Si Racha in the dry season
Nov – Apr
Fair
- 31–34 °C by day
- Sea 29 °C
- 7.8 h of sun a day
- 48 rainy days in all
Si Racha in the rainy season
May – Oct
Poor
- 32–33 °C by day
- Sea 30 °C
- 5.3 h of sun a day
- 136 rainy days in all
Which month for what?
Beach & swimming
Nov – Mar
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Peak heat
Apr – May
Highs of 33 °C or more
Rainy months
May – Oct
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Si Racha for you.
Your best months: December – February
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Poor
Best time to visit: December – February
Where to go in OctoberSea temperature in October
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 28°
- Midday, 13:00: about 32°
- Afternoon, 16:00: about 31°
- Evening, 20:00: about 28°
- Night, 23:00: about 27°
06:0617:58
Warm enough for a T-shirt in the evening.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 05:53–06:35 · evening 17:29–18:11
- Blue hour
- Morning 05:45–05:53 · evening 18:11–18:19
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Si Racha compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs stay at about 32° from start to end. The sea cools from 30° to 29°. The days get 0.3 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 32° | 32° |
| Night-time low | 25° | 25° |
| Sea | 30° | 29° |
| Daylight | 12.0 h | 11.7 h |
What is the weather like in Si Racha in October?
In October, Si Racha is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 29.5 °C – almost as warm as a bath. Expect around 5.7 hours of sunshine a day. It is the rainy season: rain falls on about 22 days, totalling 195 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is not an ideal month for a holiday in Si Racha.
More details for October
- Daylight
- 11 h 51 min06:06 – 17:58
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 79 %on averageAll months
- Hot days
- 29 days30 °C or moreAll months
- Time zone
- UTC+7offset from UTC
How the score comes together
- Temperatureweight 50 %40 %
- Sunshineweight 20 %45 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Compare two months in Si Racha
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
December has the better holiday weather in Si Racha: score 71 against 29. In December, days are 1 °C cooler than in October. The sea is 2 °C cooler in December. December has 19 fewer rainy days. The sun shines 2 hours longer a day in December.
| Month | October | December |
|---|---|---|
| Holiday weather score | 29 | 71better |
| Daytime high | 32° | 31° |
| Night-time low | 25° | 24° |
| Sea | 29.5° | 28.0° |
| Sunshine | 5.7 h | 7.5 hbetter |
| Rainy days | 22 | 3better |
| Rainfall | 195 mm | 12 mmbetter |
| Muggy days | 31 | 20better |
Based on the climate averages 1996–2025.
Si Racha month by month
The typical weather for every month at a glance.
69January31° · Sea 27° · 7.8 h
In January, Si Racha is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 27.4 °C – lovely and warm for swimming. The sun shines for around 7.8 hours a day. Rain is rare: about 5 days bring 21 mm in total. On about 25 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is a good month for a holiday in Si Racha.
Si Racha in January63February32° · Sea 28° · 7.9 h
In February, Si Racha is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 28.0 °C – lovely and warm for swimming. The sun shines for around 7.9 hours a day. Rain falls on about 6 days, adding up to 30 mm. On about 26 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, February is a good month for a holiday in Si Racha.
Si Racha in February48March32° · Sea 29° · 8.1 h
In March, Si Racha is hot: daytime highs average 32 °C, and even at night it stays warm at around 27 °C. The sea averages 29.0 °C – almost as warm as a bath. The sun shines for around 8.1 hours a day. Rain is frequent, with about 11 rainy days and 61 mm in total. On about 30 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, March is a so-so month for a holiday in Si Racha.
Si Racha in March33April34° · Sea 30° · 8.1 h
In April, Si Racha is very hot: daytime highs average 34 °C, and even at night it stays warm at around 28 °C. The sea averages 30.2 °C – almost as warm as a bath. The sun shines for around 8.1 hours a day. It rains often – on about 15 days, adding up to 99 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, April is not an ideal month for a holiday in Si Racha.
Si Racha in April23May33° · Sea 31° · 6.4 h
In May, Si Racha is very hot: daytime highs average 33 °C, and even at night it stays warm at around 27 °C. The sea averages 30.7 °C – almost as warm as a bath. Expect around 6.4 hours of sunshine a day. It is the rainy season: rain falls on about 22 days, totalling 154 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, May is not an ideal month for a holiday in Si Racha.
Si Racha in May22June33° · Sea 30° · 5.2 h
In June, Si Racha is hot: daytime highs average 33 °C, and even at night it stays warm at around 27 °C. The sea averages 30.2 °C – almost as warm as a bath. Expect around 5.2 hours of sunshine a day. It is the rainy season: rain falls on about 21 days, totalling 119 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, June is not an ideal month for a holiday in Si Racha.
Si Racha in June25July32° · Sea 30° · 5.0 h
In July, Si Racha is hot: daytime highs average 32 °C, and even at night it stays warm at around 27 °C. The sea averages 29.8 °C – almost as warm as a bath. Expect around 5.0 hours of sunshine a day. It is the rainy season: rain falls on about 23 days, totalling 139 mm. On about 30 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is not an ideal month for a holiday in Si Racha.
Si Racha in July25August32° · Sea 30° · 4.8 h
In August, Si Racha is hot: daytime highs average 32 °C, and even at night it stays warm at around 27 °C. The sea averages 29.5 °C – almost as warm as a bath. Expect around 4.8 hours of sunshine a day. It is the rainy season: rain falls on about 23 days, totalling 132 mm. On about 30 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is not an ideal month for a holiday in Si Racha.
Si Racha in August28September32° · Sea 30° · 4.9 h
In September, Si Racha is hot: daytime highs average 32 °C, and even at night it stays warm at around 26 °C. The sea averages 29.5 °C – almost as warm as a bath. Expect around 4.9 hours of sunshine a day. It is the rainy season: rain falls on about 25 days, totalling 236 mm. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is not an ideal month for a holiday in Si Racha.
Si Racha in September29October32° · Sea 30° · 5.7 h
In October, Si Racha is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 29.5 °C – almost as warm as a bath. Expect around 5.7 hours of sunshine a day. It is the rainy season: rain falls on about 22 days, totalling 195 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is not an ideal month for a holiday in Si Racha.
Si Racha in October55November32° · Sea 29° · 7.4 h
In November, Si Racha is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 29.1 °C – almost as warm as a bath. The sun shines for around 7.4 hours a day. Rain falls on about 9 days, adding up to 56 mm. On about 26 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, November is a so-so month for a holiday in Si Racha.
Si Racha in November71December31° · Sea 28° · 7.5 h
In December, Si Racha is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 28.0 °C – lovely and warm for swimming. The sun shines for around 7.5 hours a day. Rain is rare: about 3 days bring 12 mm in total. On about 23 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, December is a good month for a holiday in Si Racha.
Si Racha in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Si Racha
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Hot 24° and more
- muggy month (15+ muggy days)
HotOctober: nights around 25°. Hot nights: air conditioning makes sleeping much easier. Muggy on about 31 days (dew point 18 °C or more).
The coolest nights are in January (24°), the warmest in April (28°). Nights stay tropical all year (20 °C and more), so a room with air conditioning or at least a fan pays off. It is muggy (dew point 18 °C or more) all year, on about 337 days a year.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 69 | 31° | 24° | 27.4° | 7.8 h | 5 | 21 |
| FebruaryFeb | 63 | 32° | 25° | 28.0° | 7.9 h | 6 | 30 |
| MarchMar | 48 | 32° | 27° | 29.0° | 8.1 h | 11 | 61 |
| AprilApr | 33 | 34° | 28° | 30.2° | 8.1 h | 15 | 99 |
| MayMay | 23 | 33° | 27° | 30.7° | 6.4 h | 22 | 154 |
| JuneJun | 22 | 33° | 27° | 30.2° | 5.2 h | 21 | 119 |
| JulyJul | 25 | 32° | 27° | 29.8° | 5.0 h | 23 | 139 |
| AugustAug | 25 | 32° | 27° | 29.5° | 4.8 h | 23 | 132 |
| SeptemberSep | 28 | 32° | 26° | 29.5° | 4.9 h | 25 | 236 |
| OctoberOct | 29 | 32° | 25° | 29.5° | 5.7 h | 22 | 195 |
| NovemberNov | 55 | 32° | 25° | 29.1° | 7.4 h | 9 | 56 |
| DecemberDec | 71 | 31° | 24° | 28.0° | 7.5 h | 3 | 12 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
13.17° N, 100.93° E · 0 m · Asia/Bangkok
Sea temperature in Si Racha
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 29.1 – 30.1 °C
Swimming season: all year
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Si Racha ranges from 27.4 °C in January to 30.7 °C in May. At 20 °C and more, the sea is warm enough for swimming all year round.
The sea warms up slowly: it is warmest in May, while the air already peaks in April. The sea temperature varies from year to year: in May, eight out of ten years were between 30.0 and 31.4 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 27.4° | 26.4° | 28.7° | warm |
| FebruaryFeb | 28.0° | 27.2° | 28.8° | warm |
| MarchMar | 29.0° | 28.4° | 29.6° | very warm |
| AprilApr | 30.2° | 29.6° | 30.7° | very warm |
| MayMay | 30.7° | 30.0° | 31.4° | very warm |
| JuneJun | 30.2° | 29.3° | 30.8° | very warm |
| JulyJul | 29.8° | 29.1° | 30.5° | very warm |
| AugustAug | 29.5° | 29.0° | 30.3° | very warm |
| SeptemberSep | 29.5° | 28.9° | 30.1° | very warm |
| OctoberOct | 29.5° | 29.1° | 30.1° | very warm |
| NovemberNov | 29.1° | 28.4° | 29.7° | very warm |
| DecemberDec | 28.0° | 27.1° | 29.2° | warm |
Sunshine hours in Si Racha
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 5.7 of 11.9 hours of daylight in Si Racha, 48 % of the daylight hours.
Sunshine hours: measured at the weather station 14 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Si Racha: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Si Racha has about 22 rainy days with 195 mm of rain in total.
UV index in Si Racha
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 11 · extremeAvoid the midday sun; SPF 50+, covering clothes, hat and sunglasses.
The sun is strongest in August (UV 13).
Minutes until sunburn in October
- Very fair skin
- about 10 min
- Fair skin
- about 15 min
- Light brown skin
- about 20 min
- Olive skin
- about 25 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Si Racha
How breezy and how cloudy Si Racha is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Si Racha typically peaks at 11 km/h during the day: Beaufort 2, light breeze or less.
Breezy months for windsurfing and kiting
The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 79 % of the sky over Si Racha: mostly cloudy, with about 5.7 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Si Racha
How often the day gets hot in Si Racha (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Si Racha has about 29 hot days, with an average daytime high of 32 °C: hot and muggy. Plan outdoor activities for the morning and evening, drink a lot and take breaks in the cool.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Planning a trip to Si Racha
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Si Racha in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Si Racha has its best school-holiday weather during the Christmas holidays (score 70) and its weakest during May half-term (score 23).
- 38
Easter holidays
Mar – Apr
Poor
- 33 °C by day
- Sea 30 °C
- 8.1 h of sun a day
- 14 rainy days a month
Keep in mind: Peak heat
- 23
May half-term
May – Jun
Poor
- 33 °C by day
- Sea 31 °C
- 6.2 h of sun a day
- 22 rainy days a month
Keep in mind: Peak heat, Frequent rain
- 25
Summer holidays
Jul – Aug
Poor
- 32 °C by day
- Sea 30 °C
- 4.9 h of sun a day
- 23 rainy days a month
Keep in mind: Frequent rain
- 29
October half-term
Oct
Poor
- 32 °C by day
- Sea 30 °C
- 5.7 h of sun a day
- 22 rainy days a month
Keep in mind: Frequent rain
- 70
Christmas holidays
Dec – Jan
GoodBest holidays
- 31 °C by day
- Sea 28 °C
- 7.7 h of sun a day
- 4 rainy days a month
Good for: Beach & swimming
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 12 h 5 min
- Distance
- 9,630 km
- Time zone
- UTC+7
- Jet lag
- About 6 days (6 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Si Racha compared
Put Si Racha side by side with another destination.
Si Racha vs Laem Chabang
In October the holiday weather in Si Racha and Laem Chabang is about equally good (score 29 vs 29). During the day it is about as warm in Laem Chabang as in Si Racha. The sea is about equally warm.
| in October | Si Racha | Laem Chabang |
|---|---|---|
| Holiday weather score | 29 | 29 |
| Daytime high | 32° | 32° |
| Sea | 30° | 30° |
| Sunshine | 6 h | 6 h |
| Rainy days | 22 | 22 |
| Best time | Dec – Feb | Nov – Mar |
Through the year
Thailand in October: the best places
In October, Si Racha ranks 24 among the 31 nearest destinations in this country.
- Pattaya31°30°67
- 2Ko Chang31°29°67
- 3Ko Kut31°29°67
- 4Hua Hin31°29°66
- 5Koh Tao29°29°66
- 6Ko Pha-ngan28°29°66
- 7Koh Samui31°29°66
- 8Laem Chabang32°30°65
- 24Si RachaThis page32°30°29
Near Si Racha
Other destinations close by.
Places with a climate like Si Racha
Destinations whose weather through the year is closest to Si Racha's – good alternatives.
Frequently asked questions about Si Racha
When is the best time to visit Si Racha?
The best time to visit Si Racha is from December to February. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Si Racha?
The sea temperature in Si Racha ranges from 27.4 °C in January to 30.7 °C in May. At 20 °C and more, the sea is warm enough for swimming all year round.
Can you swim in Si Racha in October?
Yes. In October the sea averages 29.5 °C – almost as warm as a bath.
What is the warmest month in Si Racha?
April is the warmest month, with average highs of 34 °C and nights around 28 °C. December is the coolest month at 31 °C.
When does it rain most in Si Racha?
The rainy season is from May to October; the wettest month is September with 236 mm. The driest month is December with 12 mm.
How many hours of sunshine does Si Racha get?
Si Racha gets around 2,400 hours of sunshine a year. The sunniest month is March with 8.1 hours a day; in August there are 4.8 hours a day.
What time zone is Si Racha in?
Si Racha is on UTC+7 all year.
How long is the flight from London to Si Racha?
A nonstop flight from London to Si Racha takes about 12 h 5 min, for a straight-line distance of about 9,630 km. Most routes need a change of planes, which adds time.
Which school holidays are best for Si Racha?
Si Racha has its best school-holiday weather during the Christmas holidays (score 70) and its weakest during May half-term (score 23). Holiday ratings (0–100): Easter holidays 38, May half-term 23, summer holidays 25, October half-term 29, Christmas holidays 70.