Khlong Sam Wa in Summer
In summer (June, July and August), Khlong Sam Wa sees average daytime highs around 33°C and overnight lows near 27°C, with 461 mm of rain over about 73 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Across summer, daytime highs hold fairly steady around 33°C. The sky is clear or mostly clear about 2% of the time across summer, and the air most often feels miserable.
Summer is Khlong Sam Wa's weakest season of the year to visit on our travel score. For the whole year in context, see Khlong Sam Wa's year-round climate.
- Avg daytime high
- 33°C
- 2nd-warmest season
- Avg overnight low
- 27°C
- Rainfall
- 461 mm
- 73 wet days
- Avg wind
- 10 km/h
- Travel score
- 2.2
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Khlong Sam Wa in Summer
Across summer, daytime highs hold fairly steady around 33°C.
A typical summer day in Khlong Sam Wa reaches about 33°C and drops to 27°C overnight. The warmest of the three months is June, the coolest August.
How summer really feels in Khlong Sam Wa
Once humidity and wind are folded in, summer brings about 92 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Khlong Sam Wa weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 32° / 22° | 17 | 3.6 | 11.3 | 5.0 |
| Feb | 33° / 24° | 16 | 3.6 | 11.5 | 4.4 |
| Mar | 34° / 26° | 49 | 8.4 | 11.9 | 3.3 |
| Apr | 35° / 27° | 81 | 12.9 | 12.3 | 2.4 |
| May | 34° / 27° | 150 | 22.2 | 12.6 | 2.0 |
| Jun | 33° / 27° | 141 | 23 | 12.8 | 2.1 |
| Jul | 33° / 27° | 154 | 24.4 | 12.7 | 2.2 |
| Aug | 33° / 27° | 165 | 25.1 | 12.5 | 2.2 |
| Sep | 32° / 26° | 254 | 26.2 | 12.1 | 2.2 |
| Oct | 32° / 25° | 183 | 20.3 | 11.7 | 3.0 |
| Nov | 32° / 24° | 39 | 6.5 | 11.4 | 4.3 |
| Dec | 31° / 22° | 10 | 2 | 11.2 | 5.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 2% of the time across summer.
Chance of precipitation in Summer
Khlong Sam Wa gets around 461 mm of rain over 73 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 10 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 48 min in early June to 12 h 18 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.9 kWh/m².
Hazard calendar for Khlong Sam Wa
In summer, Khlong Sam Wa overlaps its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.
Khlong Sam Wa sits in the Pacific typhoon belt; the season peaks July–October.
Khlong Sam Wa's monsoon runs May–October, when most of the year's rain falls.
Is summer a good time to visit Khlong Sam Wa?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Khlong Sam Wa.
What to pack for Khlong Sam Wa in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Khlong Sam Wa sees daytime highs around 33°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 73 days see rain.
Sea temperature near Khlong Sam Wa in Summer
The nearest coast averages about 30°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 57 km away) is warmest in May at about 31°C and coldest in January near 27°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 28 | 29 | 30 | 31 | 30 | 30 | 30 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 31 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Warm |
UV index in Khlong Sam Wa in Summer
Clear-sky midday UV across summer averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Khlong Sam Wa peaks around August 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 9 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 9 | 12 | 11 | 10 | 12 | 12 | 13 | 12 | 10 | 9 | 9 |
| Level | Very high | Very high | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 9 | Very high |
| Mar | 12 | Extreme |
| Apr | 11 | Extreme |
| May | 10 | Very high |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Very high |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in Khlong Sam Wa in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Khlong Sam Wa is worst in January — around 114 µg/m³ PM2.5 (unhealthy), about 2.5× the cleanest month (August, 46 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 114 | 97 | 69 | 62 | 54 | 46 | 47 | 46 | 60 | 87 | 101 | 102 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Poor | Poor | Unhealthy | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 114 | Unhealthy |
| Feb | 97 | Unhealthy |
| Mar | 69 | Unhealthy |
| Apr | 62 | Unhealthy |
| May | 54 | Poor |
| Jun | 46 | Poor |
| Jul | 47 | Poor |
| Aug | 46 | Poor |
| Sep | 60 | Unhealthy |
| Oct | 87 | Unhealthy |
| Nov | 101 | Unhealthy |
| Dec | 102 | Unhealthy |
Where is Khlong Sam Wa?
Khlong Sam Wa sits at 13.9°N, 100.7°E, 2 m above sea level, in Thailand. The nearest listed city is Khan Na Yao, 8.0 km away.
Topography around Khlong Sam Wa
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Khlong Sam Wa.
Within 3 km, the terrain around Khlong Sam Wa has only modest variations in elevation — a maximum elevation change of 9 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 42 m; within 80 km, large variations in elevation — a maximum elevation change of 1,088 m.
The land around Khlong Sam Wa is covered by trees (29%), cropland (29%) and artificial surfaces (28%) within 3 km, artificial surfaces (39%), cropland (26%) and trees (22%) within 16 km, and cropland (36%) and trees (23%) within 80 km.
Thailand travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B / C
- 230 V · 50 Hz
- Prices
- ≈ 31% of US
- price level, 2025
- GDP per capita
- $8,057
- 2025
- Happiness
- 6.3 / 10
- World Happiness, 2025
- Homicide rate
- 4.8
- per 100k, 2011
- Road deaths
- 32.2
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Very low
- EF EPI 402
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Khlong Sam Wa (13.8714°, 100.7372°, elevation 2 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.