Weather in Samui on 17 August 2026
Preliminary outlook for 17 August 2026
A preliminary estimate based on the 2019–2025 archive: daytime around +29°C and nighttime around +27°C, average precipitation 1 mm, wind around 4 m/s, humidity around 73%.
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
Cloudy
Weather archive — latest year: 2025
Nighttime: +26°C
Precipitation: 0.1 mm
Wind: 5 — 7 m/s
Humidity: 75%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 10 h |
| UV index | 6 | Cloud cover (avg.) | 66% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +30°C | Dew point (avg.) | +22°C |
| Heat index (avg.) | +30°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 206° ← (W) |
Sunrise
06:12
Duration
12 h 24 min
Sunset
18:36
Moonrise
00:11
Moonset
13:18
Moon phase
Last Quarter
Illumination
37%
+29°C
Weather archive — for 2024 year
Partly Cloudy
Weather archive — for 2024 year
Nighttime: +29°C
Precipitation: 5.5 mm
Wind: 1 — 1 m/s
Humidity: 68%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 5 h |
| UV index | 6 | Cloud cover (avg.) | 67% |
| Pressure (avg.) | 756 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.) | 4 m/s | Wind direction (avg.) | 233° ← (W) |
Sunrise
06:12
Duration
12 h 24 min
Sunset
18:36
Moonrise
16:37
Moonset
03:25
Moon phase
Waxing Gibbous
Illumination
86%
+28°C
Weather archive — for 2023 year
Cloudy
Weather archive — for 2023 year
Nighttime: +27°C
Precipitation: 0.1 mm
Wind: 5 — 6 m/s
Humidity: 74%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 8 h |
| UV index | 6 | Cloud cover (avg.) | 51% |
| Pressure (avg.) | 758 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.) | 10 m/s | Wind direction (avg.) | 262° ↙ (WSW) |
Sunrise
06:12
Duration
12 h 25 min
Sunset
18:37
Moonrise
06:45
Moonset
19:25
Moon phase
Waxing Crescent
Illumination
1%
+28°C
Weather archive — for 2022 year
Cloudy
Weather archive — for 2022 year
Nighttime: +28°C
Precipitation: 0 mm
Wind: 5 — 7 m/s
Humidity: 74%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 9 h |
| UV index | 6 | Cloud cover (avg.) | 72% |
| Pressure (avg.) | 756 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +33°C | Dew point (avg.) | +23°C |
| Heat index (avg.) | +33°C | Wind chill (avg.) | +29°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 261° ↙ (WSW) |
Sunrise
06:12
Duration
12 h 25 min
Sunset
18:37
Moonrise
22:48
Moonset
10:41
Moon phase
Waning Gibbous
Illumination
61%
+27°C
Weather archive — for 2021 year
Overcast
Weather archive — for 2021 year
Nighttime: +25°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 76%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +28°C | Sun hours | 2 h |
| UV index | 7 | Cloud cover (avg.) | 74% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +30°C | Dew point (avg.) | +23°C |
| Heat index (avg.) | +30°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 231° ↖ (NW) |
Sunrise
06:12
Duration
12 h 24 min
Sunset
18:36
Moonrise
13:54
Moonset
00:50
Moon phase
First Quarter
Illumination
61%
+28°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +25°C
Precipitation: 0 mm
Wind: 3 — 3 m/s
Humidity: 72%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 12 h |
| UV index | 6 | Cloud cover (avg.) | 54% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +31°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +31°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 265° ← (W) |
Sunrise
06:12
Duration
12 h 24 min
Sunset
18:36
Moonrise
04:11
Moonset
17:13
Moon phase
Waning Crescent
Illumination
1%
+29°C
Weather archive — for 2019 year
Patchy rain nearby
Weather archive — for 2019 year
Nighttime: +29°C
Precipitation: 1.1 mm
Wind: 6 — 7 m/s
Humidity: 73%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 9 h |
| UV index | 7 | Cloud cover (avg.) | 54% |
| 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.) | +29°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 251° ↙ (WSW) |
Sunrise
06:12
Duration
12 h 25 min
Sunset
18:37
Moonrise
20:01
Moonset
07:25
Moon phase
Waxing Gibbous
Illumination
86%
Weather in Samui on 17 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+29°C
|
+26°C
|
+28°C | 10 h | 6 | 75% | 5 — 7 m/s |
| 2024 |
+30°C
|
+29°C
|
+29°C | 5 h | 6 | 68% | 1 — 1 m/s |
| 2023 |
+30°C
|
+27°C
|
+28°C | 8 h | 6 | 74% | 5 — 6 m/s |
| 2022 |
+29°C
|
+28°C
|
+28°C | 9 h | 6 | 74% | 5 — 7 m/s |
| 2021 |
+28°C
|
+25°C
|
+27°C | 2 h | 7 | 76% | 3 — 4 m/s |
| 2020 |
+29°C
|
+25°C
|
+28°C | 12 h | 6 | 72% | 3 — 3 m/s |
| 2019 |
+30°C
|
+29°C
|
+29°C | 9 h | 7 | 73% | 6 — 7 m/s |