Rayong monthly weather and climate
Rayong · Gulf of Thailand, east coast
Rayong's dry season runs from November to April, with many days suited to spending time on the beach. The rainy season lasts from May to October, with the heaviest rain and rough seas in September. Tropical storms are also a risk, so consider rainfall and sea conditions as well as temperatures when planning a beach holiday.
25 mmJan25 mmFeb65 mmMar80 mmApr185 mmMay240 mmJun240 mmJul220 mmAug300 mmSep230 mmOct55 mmNov15 mmDec
When are the dry and rainy seasons?
- Best time to visit
- Nov–Apr
- Dry season
- Nov–Apr
- Rainy season
- May–Oct
- Hottest month
- Apr (34°C)
- Wettest month
- Sep (300 mm)
Monthly weather and climate
Use the table below to compare hotter and wetter months. These are historical climate averages, so they do not give a forecast for your travel dates or tell you whether you will be able to swim.
| Month | Travel rating | Temperature | Rainfall | Rainy days | Humidity | Sunshine | Sea conditions |
|---|---|---|---|---|---|---|---|
| January | ++ Very good | 22~32°C | 25 mm | 3 days | 74% | 7.5 hours | Calm |
| February | ++ Very good | 22~32°C | 25 mm | 3 days | 74% | 7.5 hours | Calm |
| March | + Good | 26~33°C | 65 mm | 6 days | 74% | 8 hours | Calm |
| April | + Good | 27~34°C | 80 mm | 9 days | 77% | 7 hours | Calm |
| May | ± Average | 27~34°C | 185 mm | 17 days | 78% | 5.5 hours | Moderate |
| June | - Not recommended | 27~33°C | 240 mm | 18 days | 78% | 4 hours | Moderate |
| July | - Not recommended | 27~32°C | 240 mm | 18 days | 77% | 4 hours | Moderate |
| August | - Not recommended | 26~32°C | 220 mm | 18 days | 79% | 3.8 hours | Moderate |
| September | - Not recommended | 26~32°C | 300 mm | 20 days | 82% | 3.7 hours | Rough |
| October | - Not recommended | 26~32°C | 230 mm | 18 days | 82% | 4.5 hours | Rough |
| November | + Good | 25~32°C | 55 mm | 8 days | 76% | 6 hours | Moderate |
| December | ++ Very good | 22~32°C | 15 mm | 2 days | 70% | 7.5 hours | Calm |
| Month | Weather and travel advice |
|---|---|
| January | Cooler, dry weather brings clear skies. Humidity is also low, making this a good month for spending time on the beach. |
| February | The dry season continues, with plenty of warm, sunny days. Seas are generally calm. |
| March | Temperatures rise as the hot season approaches. This month has the most sunshine hours of the year, though occasional showers are possible. |
| April | This is the hottest time of year and the month of the Songkran festival. Thunderstorms are possible in the afternoon. |
| May | Rainfall rises quickly as the south-west monsoon begins. This is also the month of the Rayong Fruit Festival. |
| June | The rainy season is well established. Cloudy days are common, with frequent afternoon showers. |
| July | The rainy season continues, bringing regular rain. |
| August | The monsoon strengthens, bringing heavy rain and high humidity. |
| September | This is the wettest month. Rough seas and the risk of tropical storms need to be considered when planning beach outings. |
| October | Heavy rain eases towards the end of the rainy season, but seas remain rough. |
| November | Rainfall drops quickly as the dry season approaches. Seas gradually become calmer. |
| December | This month has the least rain and the lowest humidity. Clear weather accompanies the continuing peak season for beach holidays. |