Rayong weather by month & the best time to visit
Thailand · beach resort · tropical monsoon climate
The best time to visit Rayong is February — its sunniest month (Sunshine Score 88/100), with December and January close behind. Rayong averages about 2,377 hours of sunshine a year. Daytime highs around 29°C / 84°F and roughly 25 mm of rain in February.
When is the best time to visit Rayong?
For sunshine, the best time to visit Rayong is February, then December and January. The dullest month is May (65/100, 224 mm of rain). The full month-by-month picture is in the table below.
How sunny is Rayong?
Rayong gets a moderate 2,377 hours of sunshine a year. February (88/100) is noticeably better than May (65). It ranks #11 of 24 destinations in Thailand for annual sunshine, above the national median of 2,329 hours. Rain has a clear season: the wettest stretch, around August, carries about 47% of the annual 2,065 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 86 | 28° / 82°F | 25° / 77°F | 35 mm | 9 | 28° / 82°F |
| February | 88 | 29° / 84°F | 26° / 79°F | 25 mm | 9 | 29° / 84°F |
| March | 81 | 29° / 84°F | 27° / 81°F | 64 mm | 10 | 30° / 86°F |
| April | 76 | 30° / 86°F | 28° / 82°F | 91 mm | 10 | 31° / 88°F |
| May | 65 | 30° / 86°F | 29° / 84°F | 224 mm | 9 | 32° / 90°F |
| June | 65 | 29° / 84°F | 28° / 82°F | 290 mm | 9 | 31° / 88°F |
| July | 65 | 29° / 84°F | 28° / 82°F | 324 mm | 9 | 30° / 86°F |
| August | 65 | 29° / 84°F | 27° / 81°F | 293 mm | 10 | 30° / 86°F |
| September | 65 | 29° / 84°F | 27° / 81°F | 360 mm | 9 | 30° / 86°F |
| October | 65 | 29° / 84°F | 27° / 81°F | 252 mm | 9 | 31° / 88°F |
| November | 78 | 29° / 84°F | 26° / 79°F | 80 mm | 9 | 30° / 86°F |
| December | 88 | 29° / 84°F | 25° / 77°F | 27 mm | 9 | 29° / 84°F |
Sea temperature in Rayong by month
The sea off Rayong is warmest in May at around 32°C / 90°F, and coolest in January at 28°C / 82°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Head-to-head
How Rayong compares month by month: Rayong vs Bangkok · Rayong vs Phu Quoc · Rayong vs Ko Samui · all comparisons
Rayong: questions and answers
What kind of destination is Rayong?
Rayong is a beach resort in Thailand with a tropical monsoon climate — the sea reaches 32°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Rayong get a year?
Rayong gets about 2,377 hours of sunshine a year, at its best around February.
When is the best time to visit Rayong?
The sunniest time to visit Rayong is February, when the Sunshine Score peaks at 88/100 (with December and January close behind). Expect daytime highs around 29°C / 84°F.
What is the least sunny month in Rayong?
May is the least sunny month in Rayong, scoring 65/100 with about 224 mm of rain.
What is the sea temperature in Rayong?
The sea in Rayong ranges from about 28°C (January) to 32°C (May). Month-by-month sea temperatures are on this page.
How strong is the sun in Rayong?
The typical midday UV index in Rayong peaks around 10 (very high) in March, easing to about 9 (very high) in January. Month-by-month midday UV values are in the UV column of the table on this page.
Put the Rayong sunshine badge on your site
A compact badge showing Rayong's sunshine at a glance — free to embed under CC BY 4.0. Paste this wherever you'd like it to appear:
Live preview — this is exactly what your readers see: