Weather in Ko Samet on 18 August 2026
Preliminary outlook for 18 August 2026
A preliminary estimate based on the 2019–2025 archive: daytime around +30°C and nighttime around +27°C, average precipitation 1.3 mm, wind around 4 m/s, humidity around 75%.
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
Patchy rain nearby
Weather archive — latest year: 2025
Nighttime: +26°C
Precipitation: 0.8 mm
Wind: 5 — 6 m/s
Humidity: 73%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 9 h |
| UV index | 7 | Cloud cover (avg.) | 47% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +31°C | Dew point (avg.) | +23°C |
| Heat index (avg.) | +31°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 274° ← (W) |
Sunrise
06:03
Duration
12 h 30 min
Sunset
18:33
Moonrise
00:56
Moonset
14:22
Moon phase
Last Quarter
Illumination
29%
+29°C
Weather archive — for 2024 year
Overcast
Weather archive — for 2024 year
Nighttime: +28°C
Precipitation: 0 mm
Wind: 4 — 4 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 8 h |
| UV index | 6 | Cloud cover (avg.) | 71% |
| Pressure (avg.) | 756 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.) | 174° ↓ (S) |
Sunrise
06:03
Duration
12 h 30 min
Sunset
18:33
Moonrise
17:33
Moonset
04:14
Moon phase
Waxing Gibbous
Illumination
93%
+29°C
Weather archive — for 2023 year
Partly Cloudy
Weather archive — for 2023 year
Nighttime: +27°C
Precipitation: 0 mm
Wind: 5 — 5 m/s
Humidity: 73%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 9 h |
| UV index | 6 | Cloud cover (avg.) | 49% |
| 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.) | 9 m/s | Wind direction (avg.) | 251° ↙ (WSW) |
Sunrise
06:03
Duration
12 h 30 min
Sunset
18:33
Moonrise
07:22
Moonset
19:57
Moon phase
Waxing Crescent
Illumination
9%
+28°C
Weather archive — for 2022 year
Partly Cloudy
Weather archive — for 2022 year
Nighttime: +27°C
Precipitation: 7.3 mm
Wind: 5 — 5 m/s
Humidity: 76%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 6 h |
| UV index | 6 | Cloud cover (avg.) | 72% |
| 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.) | +23°C |
| Heat index (avg.) | +32°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 246° ↙ (WSW) |
Sunrise
06:03
Duration
12 h 30 min
Sunset
18:33
Moonrise
23:20
Moonset
11:28
Moon phase
Waning Gibbous
Illumination
54%
+28°C
Weather archive — for 2021 year
Partly Cloudy
Weather archive — for 2021 year
Nighttime: +27°C
Precipitation: 0 mm
Wind: 3 — 3 m/s
Humidity: 75%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 11 h |
| UV index | 7 | Cloud cover (avg.) | 44% |
| 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.) | 5 m/s | Wind direction (avg.) | 225° ↓ (S) |
Sunrise
06:03
Duration
12 h 30 min
Sunset
18:33
Moonrise
14:57
Moonset
01:35
Moon phase
Waxing Gibbous
Illumination
69%
+28°C
Weather archive — for 2020 year
Cloudy
Weather archive — for 2020 year
Nighttime: +27°C
Precipitation: 0.5 mm
Wind: 3 — 4 m/s
Humidity: 76%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 7 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.) | +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.) | 251° ← (W) |
Sunrise
06:03
Duration
12 h 30 min
Sunset
18:33
Moonrise
05:00
Moonset
18:06
Moon phase
New Moon
Illumination
0%
+28°C
Weather archive — for 2019 year
Clear/Sunny
Weather archive — for 2019 year
Nighttime: +28°C
Precipitation: 0.5 mm
Wind: 5 — 5 m/s
Humidity: 76%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 10 h |
| UV index | 6 | Cloud cover (avg.) | 48% |
| 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.) | 9 m/s | Wind direction (avg.) | 229° ↙ (SW) |
Sunrise
06:03
Duration
12 h 30 min
Sunset
18:33
Moonrise
20:35
Moonset
08:02
Moon phase
Waning Gibbous
Illumination
78%
Weather in Ko Samet on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+29°C
|
+26°C
|
+28°C | 9 h | 7 | 73% | 5 — 6 m/s |
| 2024 |
+30°C
|
+28°C
|
+29°C | 8 h | 6 | 79% | 4 — 4 m/s |
| 2023 |
+30°C
|
+27°C
|
+29°C | 9 h | 6 | 73% | 5 — 5 m/s |
| 2022 |
+30°C
|
+27°C
|
+28°C | 6 h | 6 | 76% | 5 — 5 m/s |
| 2021 |
+30°C
|
+27°C
|
+28°C | 11 h | 7 | 75% | 3 — 3 m/s |
| 2020 |
+30°C
|
+27°C
|
+28°C | 7 h | 6 | 76% | 3 — 4 m/s |
| 2019 |
+29°C
|
+28°C
|
+28°C | 10 h | 6 | 76% | 5 — 5 m/s |