Den Chai weather in August

In August, Den Chai sees average daytime highs of 31°C and overnight lows near 24°C, with 341 mm of rain across 28.9 wet days and about 12.6 hours of daylight. It is the 10th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 0% of the time in August, and the air most often feels miserable.

Daylight stretches from about 12 h 48 min at the start of August to 12 h 24 min by month's end. Set against the rest of the year, August is Den Chai's 11th-clearest and 5th-windiest month. For the whole year in context, see Den Chai's year-round climate.

Daytime high
31°
10th warmest
Overnight low
24°
9th coldest
Rainfall
341 mm
28.9 wet days
Daylight
12 h 36 min
6:06 AM – 6:42 PM
Cloud cover
93%
11th clearest
Wind
6 km/h
5th windiest
Solar energy
3.86 kWh/m²
Travel score
2.5
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical August day in Den Chai reaches about 31°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°C. Set against its neighbours, August runs on par with July and on par with September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13124
23124
33124
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143124
153124
163124
173124
183124
193124
203124
213124
223124
233124
243124
253124
263124
273124
283124
293124
303124
313124

How August really feels in Den Chai

Once humidity and wind are folded in, August averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Den Chai weather by month

How August compares with the rest of the year at a glance. August is the 10th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 16°182.1116.2
Feb33° / 18°101.311.44.7
Mar35° / 21°314.111.92.9
Apr36° / 24°629.112.42.0
May34° / 25°20520.612.82.3
Jun32° / 25°23625.113.12.4
Jul31° / 25°27427.1132.5
Aug31° / 24°34128.912.62.5
Sep31° / 24°29526.612.12.6
Oct31° / 23°12615.811.63.9
Nov31° / 20°304.611.25.4
Dec29° / 17°14210.96.6

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 3% of August, with mostly cloudy or overcast conditions the remaining 96%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1298
2298
3298
4298
5298
6298
7298
8397
9397
10397
11397
12496
13496
14496
15496
16496
17496
18496
19496
20496
21496
22496
23496
24496
25496
26496
27496
28595
29595
30595
31595

Chance of precipitation in August

Any precipitation

Den Chai gets around 341 mm of rain over 28.9 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 93% and peaks near 93% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
193
293
393
493
593
693
793
893
993
1093
1193
1293
1393
1493
1593
1693
1793
1893
1993
2093
2193
2293
2393
2493
2593
2693
2793
2893
2993
3093
3193

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the miserable band about 88% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
11783
21783
31783
41783
51783
61783
71684
81684
91684
101684
111684
121585
131585
141486
151486
161387
171387
181288
191189
201090
211090
22991
23892
24892
25793
26793
27694
28694
29694
30694
31694

Wind in August

Winds average 6 km/h in August.

Across August, daily wind ranges from about 5 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 48 min at the start of August to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over August. Sunrise moves from 6:01 AM to 6:09 AM, and sunset from 6:50 PM to 6:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:016:50
212.86:026:50
312.86:026:50
412.86:026:49
512.86:036:49
612.86:036:48
712.76:036:48
812.76:036:47
912.76:046:46
1012.76:046:46
1112.76:046:45
1212.76:046:45
1312.76:056:44
1412.66:056:44
1512.66:056:43
1612.66:066:42
1712.66:066:42
1812.66:066:41
1912.66:066:40
2012.66:066:40
2112.56:076:39
2212.56:076:38
2312.56:076:37
2412.56:076:37
2512.56:076:36
2612.56:086:35
2712.46:086:34
2812.46:086:33
2912.46:086:33
3012.46:086:32
3112.46:096:31

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.86 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.86 kWh/m² to a high of 6.24 kWh/m² in April across the year — August's 3.86 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.8Moderate
113.8Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.9Moderate
173.9Moderate
183.9Moderate
193.9Moderate
203.9Moderate
213.9Moderate
224.0Moderate
234.0Moderate
244.0Moderate
254.0Bright
264.0Bright
274.0Bright
284.0Bright
294.0Bright
304.1Bright
314.1Bright
Planning a trip in August

Hazard calendar for Den Chai

In seasonPeak

In August, Den Chai sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Den Chai's monsoon runs May–September, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Den Chai?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.5
Sightseeing
8th-best month of the year
3.7
Beach & pool
12th-best month of the year

August is a weaker month for outdoor sightseeing in Den Chai.

What to pack for Den Chai in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Den Chai sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

UV index in Den Chai in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Den Chai peaks around June 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 7 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highJun 19UV 13Dec 16UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar9Very high
Apr10Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug13Extreme
Sep11Extreme
Oct10Very high
Nov8Very high
Dec7Very high

Air quality in Den Chai in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Den Chai is worst in March — around 63 µg/m³ PM2.5 (unhealthy), about 3.1× the cleanest month (June, 21 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModeratePoorMar 1862 µg/m³Jun 2321 µg/m³
PM2.5 (µg/m³)Level
Jan43Poor
Feb49Poor
Mar63Unhealthy
Apr53Poor
May31Moderate
Jun21Moderate
Jul21Moderate
Aug22Moderate
Sep26Moderate
Oct31Moderate
Nov33Moderate
Dec36Poor
Location & terrain

Where is Den Chai?

Den Chai sits at 18.0°N, 100.1°E, 159 m above sea level, in Thailand. The nearest listed city is Phrae, 20 km away.

ThoenSukhothaiBan Na

Topography around Den Chai

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Den Chai.

Within 3 km, the terrain around Den Chai has only modest variations in elevation — a maximum elevation change of 159 m around an average of 166 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,034 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,610 m.

The land around Den Chai is covered by trees (46%) and cropland (40%) within 3 km, trees (81%) within 16 km, and trees (76%) within 80 km.

3 km
159 m
16 km
1,034 m
80 km
1,610 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Phrae 20 km · Uttaradit 40 km · Si Satchanalai 60 km · Lampang 68 km · Sawankhalok 78 km · Thoen 98 km · Sukhothai 111 km · Ban Na 113 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
Buddhist 93%Muslim 5%Christian 1%other 1%

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 Den Chai (17.9837°, 100.0522°, elevation 159 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).