Beach
Samui Delma
Thailand · Andaman Sea
9.4552, 99.9347 · Ko Samui, 9 km
- 30°Sea · May
- 30°High · May
- 8.0 hSunshine · March
Your month at the beach
Samui Delma in January
- 27°CAir, daytime high26°C at night
- 28°CSea temperature
- 6.5 hSunshine a day
- 12 daysRainy days in the month136 mm in total
- 17 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Samui Delma in February
- 28°CAir, daytime high26°C at night
- 28°CSea temperature
- 7.8 hSunshine a day
- 6 daysRainy days in the month38 mm in total
- 15 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Samui Delma in March
- 29°CAir, daytime high27°C at night
- 29°CSea temperature
- 8.0 hSunshine a day
- 10 daysRainy days in the month114 mm in total
- 14 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Samui Delma in April
- 30°CAir, daytime high28°C at night
- 30°CSea temperature
- 7.7 hSunshine a day
- 14 daysRainy days in the month90 mm in total
- 12 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Samui Delma in May
- 30°CAir, daytime high28°C at night
- 30°CSea temperature
- 6.8 hSunshine a day
- 26 daysRainy days in the month170 mm in total
- 14 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Samui Delma in June
- 30°CAir, daytime high28°C at night
- 30°CSea temperature
- 6.3 hSunshine a day
- 25 daysRainy days in the month167 mm in total
- 17 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Samui Delma in July
- 29°CAir, daytime high28°C at night
- 30°CSea temperature
- 6.2 hSunshine a day
- 27 daysRainy days in the month166 mm in total
- 18 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Samui Delma in August
- 29°CAir, daytime high27°C at night
- 29°CSea temperature
- 6.2 hSunshine a day
- 26 daysRainy days in the month144 mm in total
- 19 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Samui Delma in September
- 29°CAir, daytime high27°C at night
- 29°CSea temperature
- 5.9 hSunshine a day
- 27 daysRainy days in the month181 mm in total
- 17 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Samui Delma in October
- 28°CAir, daytime high27°C at night
- 29°CSea temperature
- 5.1 hSunshine a day
- 28 daysRainy days in the month246 mm in total
- 14 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Samui Delma in November
- 28°CAir, daytime high27°C at night
- 29°CSea temperature
- 4.9 hSunshine a day
- 25 daysRainy days in the month375 mm in total
- 17 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Samui Delma in December
- 28°CAir, daytime high27°C at night
- 28°CSea temperature
- 5.3 hSunshine a day
- 18 daysRainy days in the month262 mm in total
- 19 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
The beach itself
- 28Places to stay within 5 kmHotels, guest houses, apartments and campsites · OpenStreetMap Places to stay near Samui Delma ↗
- 17 kmAirport: Samui International Airport (USM)In a straight line; by road it is further Car hire at Samui International Airport (USM) ↗
No reliable information yet on: bathing water quality, wheelchair access, lifeguards.
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
January from 2020 to 2025
In January 2025 the sea averaged 27.6 °C — about the same as the 1991–2020 average.
1991–2020 average: 27.8 °C
1991–2020 average: 27.4 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
February from 2020 to 2025
In February 2025 the sea averaged 28.6 °C — 0.3 °C above the 1991–2020 average.
1991–2020 average: 28.3 °C
1991–2020 average: 27.8 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
March from 2020 to 2025
In March 2025 the sea averaged 29.1 °C — about the same as the 1991–2020 average.
1991–2020 average: 29.1 °C
1991–2020 average: 28.7 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
April from 2020 to 2025
In April 2025 the sea averaged 30.1 °C — about the same as the 1991–2020 average.
1991–2020 average: 30.2 °C
1991–2020 average: 29.8 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
May from 2020 to 2025
In May 2025 the sea averaged 30.4 °C — about the same as the 1991–2020 average.
1991–2020 average: 30.4 °C
1991–2020 average: 30.0 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
June from 2020 to 2025
In June 2025 the sea averaged 30.0 °C — about the same as the 1991–2020 average.
1991–2020 average: 30.1 °C
1991–2020 average: 29.5 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
July from 2020 to 2025
In July 2025 the sea averaged 29.8 °C — about the same as the 1991–2020 average.
1991–2020 average: 29.7 °C
1991–2020 average: 29.1 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
August from 2020 to 2025
In August 2025 the sea averaged 29.8 °C — 0.3 °C above the 1991–2020 average.
1991–2020 average: 29.5 °C
1991–2020 average: 29.0 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
September from 2020 to 2025
In September 2025 the sea averaged 29.4 °C — about the same as the 1991–2020 average.
1991–2020 average: 29.3 °C
1991–2020 average: 28.7 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
October from 2020 to 2025
In October 2025 the sea averaged 29.2 °C — about the same as the 1991–2020 average.
1991–2020 average: 29.0 °C
1991–2020 average: 28.4 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
November from 2020 to 2025
In November 2025 the sea averaged 28.6 °C — about the same as the 1991–2020 average.
1991–2020 average: 28.6 °C
1991–2020 average: 28.3 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
December from 2020 to 2025
In December 2025 the sea averaged 27.7 °C — about the same as the 1991–2020 average.
1991–2020 average: 27.9 °C
1991–2020 average: 27.8 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
When to go
1991–2020 averagesThe year at a glance
- Jan28°6 h136 mm
- Feb28°8 h38 mm
- Mar29°8 h114 mm
- Apr30°8 h90 mm
- May30°7 h170 mm
- Jun30°6 h167 mm
- Jul30°6 h166 mm
- Aug29°6 h144 mm
- Sep29°6 h181 mm
- Oct29°5 h246 mm
- Nov29°5 h375 mm
- Dec28°5 h262 mm
Each card is a month. The colour is the sea temperature, on the same scale as the map; in bold, the two best months for each.
Sea temperature
1991–2020 averagesClimate through the year
1991–2020 averagesRain
Sunshine
Sunshine hours are estimated from measured solar radiation, not observed directly.
Month by month
1991–2020 averagesEvery month at Samui Delma: air, sea, rain and sunshine. Averages for 1991–2020.
| Month | High°C | Low°C | Sea°C | Rainmm | Rainy daysdays | Sunshineh/day | Windkm/h |
|---|---|---|---|---|---|---|---|
| January | 27 | 26 | 28 | 136 | 12 | 6.5 | 17 |
| February | 28 | 26 | 28 | 38 | 6 | 7.8 | 15 |
| March | 29 | 27 | 29 | 114 | 10 | 8.0 | 14 |
| April | 30 | 28 | 30 | 90 | 14 | 7.7 | 12 |
| Maywarmest sea | 30 | 28 | 30 | 170 | 26 | 6.8 | 14 |
| June | 30 | 28 | 30 | 167 | 25 | 6.3 | 17 |
| July | 29 | 28 | 30 | 166 | 27 | 6.2 | 18 |
| August | 29 | 27 | 29 | 144 | 26 | 6.2 | 19 |
| September | 29 | 27 | 29 | 181 | 27 | 5.9 | 17 |
| October | 28 | 27 | 29 | 246 | 28 | 5.1 | 14 |
| November | 28 | 27 | 29 | 375 | 25 | 4.9 | 17 |
| December | 28 | 27 | 28 | 262 | 18 | 5.3 | 19 |
Swipe sideways to see the other columns.
Plan your trip
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
About these numbers
Averages are for 1991–2020; the recent years (2020–2025) are what actually happened. Neither is today's weather.
| What | Where it comes from | Nearest measurement |
|---|---|---|
| Air, rain and sunshine | NASA POWER | 9 km away |
| Sea temperature | NOAA OISST v2.1, 1991–2020 | 11 km away |
| 2020–2025, month by month | NASA POWER · NOAA OISST v2.1 | 9 km away |
| Lifeguards and places to stay | OpenStreetMap | within 1–5 km |
| Nearest airport | OurAirports | straight-line distance |
| Image at the top | Sentinel-2 cloudless (EOX) | at this spot |