Weather in Ko Samet on 21 August 2026
Preliminary outlook for 21 August 2026
A preliminary estimate based on the 2019–2025 archive: daytime around +29°C and nighttime around +27°C, average precipitation 2.7 mm, wind around 4 m/s, humidity around 78%.
This is a climate-based estimate, not a precise long-range forecast. It is replaced by hourly data when the date enters the forecast window.
+28°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +27°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 75%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 6 h |
| UV index | 6 | Cloud cover (avg.) | 47% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +32°C | Dew point (avg.) | +23°C |
| Heat index (avg.) | +32°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 201° ↓ (SSW) |
Sunrise
06:03
Duration
12 h 28 min
Sunset
18:31
Moonrise
04:01
Moonset
17:13
Moon phase
Waning Crescent
Illumination
8%
+29°C
Weather archive — for 2024 year
Cloudy
Weather archive — for 2024 year
Nighttime: +28°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 78%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 59% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +34°C | Dew point (avg.) | +25°C |
| Heat index (avg.) | +34°C | Wind chill (avg.) | +29°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 204° ↙ (SW) |
Sunrise
06:03
Duration
12 h 28 min
Sunset
18:31
Moonrise
19:55
Moonset
07:19
Moon phase
Waxing Gibbous
Illumination
85%
+27°C
Weather archive — for 2023 year
Patchy rain nearby
Weather archive — for 2023 year
Nighttime: +27°C
Precipitation: 9.7 mm
Wind: 3 — 4 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 4 h |
| UV index | 6 | Cloud cover (avg.) | 79% |
| Pressure (avg.) | 755 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +32°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +32°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 249° ↙ (SW) |
Sunrise
06:03
Duration
12 h 29 min
Sunset
18:32
Moonrise
09:37
Moonset
21:41
Moon phase
Waxing Crescent
Illumination
30%
+28°C
Weather archive — for 2022 year
Partly Cloudy
Weather archive — for 2022 year
Nighttime: +27°C
Precipitation: 3.8 mm
Wind: 5 — 6 m/s
Humidity: 78%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 12 h |
| UV index | 6 | Cloud cover (avg.) | 63% |
| Pressure (avg.) | 755 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +33°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +33°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 250° ↙ (WSW) |
Sunrise
06:03
Duration
12 h 29 min
Sunset
18:32
Moonrise
00:48
Moonset
14:02
Moon phase
Last Quarter
Illumination
32%
+28°C
Weather archive — for 2021 year
Cloudy
Weather archive — for 2021 year
Nighttime: +26°C
Precipitation: 2.8 mm
Wind: 4 — 4 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 5 h |
| UV index | 7 | Cloud cover (avg.) | 59% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +32°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +32°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 189° ↓ (SSW) |
Sunrise
06:03
Duration
12 h 28 min
Sunset
18:31
Moonrise
17:51
Moonset
04:39
Moon phase
Waxing Gibbous
Illumination
91%
+28°C
Weather archive — for 2020 year
Cloudy
Weather archive — for 2020 year
Nighttime: +27°C
Precipitation: 0.1 mm
Wind: 2 — 3 m/s
Humidity: 77%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 1 h |
| UV index | 7 | Cloud cover (avg.) | 71% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +33°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +33°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 209° ↙ (SW) |
Sunrise
06:03
Duration
12 h 28 min
Sunset
18:31
Moonrise
07:59
Moonset
20:33
Moon phase
Waxing Crescent
Illumination
13%
+28°C
Weather archive — for 2019 year
Heavy rain at times
Weather archive — for 2019 year
Nighttime: +27°C
Precipitation: 2.6 mm
Wind: 6 — 6 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 5 h |
| UV index | 6 | Cloud cover (avg.) | 74% |
| Pressure (avg.) | 755 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +33°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +33°C | Wind chill (avg.) | +29°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 241° ↙ (SW) |
Sunrise
06:03
Duration
12 h 29 min
Sunset
18:32
Moonrise
22:27
Moonset
10:19
Moon phase
Waning Gibbous
Illumination
57%
Weather in Ko Samet on 21 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+29°C
|
+27°C
|
+28°C | 6 h | 6 | 75% | 3 — 4 m/s |
| 2024 |
+30°C
|
+28°C
|
+29°C | 11 h | 6 | 78% | 3 — 4 m/s |
| 2023 |
+29°C
|
+27°C
|
+27°C | 4 h | 6 | 79% | 3 — 4 m/s |
| 2022 |
+29°C
|
+27°C
|
+28°C | 12 h | 6 | 78% | 5 — 6 m/s |
| 2021 |
+29°C
|
+26°C
|
+28°C | 5 h | 7 | 79% | 4 — 4 m/s |
| 2020 |
+30°C
|
+27°C
|
+28°C | 1 h | 7 | 77% | 2 — 3 m/s |
| 2019 |
+29°C
|
+27°C
|
+28°C | 5 h | 6 | 79% | 6 — 6 m/s |