Ayutthaya weather in July

In July, Ayutthaya sees average daytime highs of 34°C and overnight lows near 26°C, with 149 mm of rain across 23.6 wet days and about 12.8 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 2% of the time in July, and the air most often feels miserable.

Daylight stretches from about 12 h 48 min at the start of July to 12 h 42 min by month's end. Set against the rest of the year, July is Ayutthaya's 11th-clearest and 1st-windiest month. For the whole year in context, see Ayutthaya's year-round climate.

Daytime high
34°
6th warmest
Overnight low
26°
9th coldest
Rainfall
149 mm
23.6 wet days
Daylight
12 h 48 min
6:00 AM – 6:47 PM
Cloud cover
89%
11th clearest
Wind
10 km/h
1st windiest
Solar energy
4.82 kWh/m²
Travel score
2.0
out of 10

Ayutthaya is city in Phra Nakhon Si Ayutthaya province, Thailand.

Air quality
Elevated
PM10 47.6 µg/m³ · 2017
Density
3,425/km²
people per km²
Founded
1350

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 34°C through the month.

A typical July day in Ayutthaya reaches about 34°C in the afternoon and slips back to 26°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 36°C. Set against its neighbours, July runs on par with June and on par with August.

25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13426
23426
33426
43426
53426
63426
73426
83426
93426
103426
113426
123426
133426
143426
153426
163426
173426
183426
193426
203426
213426
223426
233426
243426
253426
263426
273426
283426
293426
303426
313326

How July really feels in Ayutthaya

Once humidity and wind are folded in, July 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
31 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

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

Ayutthaya weather by month

How July compares with the rest of the year at a glance. July is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 22°122.711.24.6
Feb34° / 23°143.111.53.7
Mar35° / 26°467.611.92.6
Apr36° / 27°7712.912.31.7
May35° / 27°15922.212.71.6
Jun34° / 27°14923.412.81.8
Jul34° / 26°14923.612.82.0
Aug34° / 26°17524.512.52.0
Sep33° / 26°26625.812.12.1
Oct33° / 25°16419.311.72.9
Nov33° / 24°335.711.34.0
Dec32° / 22°8211.24.7

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 6% of July, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
2991
3991
4991
5991
6991
7991
8991
91090
101090
111090
121090
131090
141090
151090
161090
17991
18991
19892
20892
21892
22892
23793
24694
25694
26595
27595
28496
29496
30496
31496

Chance of precipitation in July

Any precipitation

Ayutthaya gets around 149 mm of rain over 23.6 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 76% and peaks near 78% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
174
274
374
474
575
675
775
876
976
1076
1176
1277
1377
1477
1577
1677
1777
1877
1977
2077
2177
2277
2377
2477
2577
2677
2777
2877
2978
3078
3178

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the miserable band about 63% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
13664
23664
33664
43565
53565
63565
73565
83565
93565
103565
113565
123565
133565
143565
153664
163664
173664
183763
193763
203763
213862
223862
233961
243961
254060
264060
274159
284258
294258
304357
314357

Wind in July

Winds average 10 km/h in July, the windiest month of the year.

Across July, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 12 h 48 min at the start of July to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over July. Sunrise moves from 5:56 AM to 6:04 AM, and sunset from 6:46 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:566:46
212.85:566:46
312.85:566:46
412.85:576:47
512.85:576:47
612.85:576:47
712.85:586:47
812.85:586:47
912.85:586:47
1012.85:586:47
1112.85:596:47
1212.85:596:47
1312.85:596:47
1412.86:006:47
1512.86:006:47
1612.86:006:47
1712.86:006:46
1812.86:016:46
1912.86:016:46
2012.76:016:46
2112.76:026:46
2212.76:026:46
2312.76:026:46
2412.76:026:45
2512.76:036:45
2612.76:036:45
2712.76:036:45
2812.76:036:44
2912.76:046:44
3012.76:046:44
3112.76:046:43

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.82 kWh/m².

For context, solar energy here swings from a low near 4.56 kWh/m² to a high of 6.16 kWh/m² in April across the year — July's 4.82 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in July

Hazard calendar for Ayutthaya

In seasonPeak

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

Ayutthaya's monsoon runs May–October, when most of the year's rain falls.

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

Is July a good time to visit Ayutthaya?

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

2.0
Sightseeing
8th-best month of the year
3.9
Beach & pool
8th-best month of the year

July is a weaker month for outdoor sightseeing in Ayutthaya.

What to pack for Ayutthaya in July

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

In July, Ayutthaya sees daytime highs around 34°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

UV index in Ayutthaya in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks 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 Ayutthaya peaks around August 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 15UV 13Nov 23UV 8
UV index (midday)Level
Jan9Very high
Feb9Very high
Mar12Extreme
Apr11Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec8Very high

Air quality in Ayutthaya in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Ayutthaya is worst in January — around 83 µg/m³ PM2.5 (unhealthy), about 1.9× the cleanest month (July, 43 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyJan 2382 µg/m³Jul 2443 µg/m³
PM2.5 (µg/m³)Level
Jan83Unhealthy
Feb81Unhealthy
Mar70Unhealthy
Apr64Unhealthy
May54Poor
Jun44Poor
Jul43Poor
Aug43Poor
Sep54Poor
Oct66Unhealthy
Nov67Unhealthy
Dec66Unhealthy
Location & terrain

Where is Ayutthaya?

Ayutthaya sits at 14.4°N, 100.6°E, 7 m above sea level, in Thailand. The nearest listed city is Bang Ban, 10 km away.

Topography around Ayutthaya

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

Within 3 km, the terrain around Ayutthaya has only modest variations in elevation — a maximum elevation change of 13 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 40 m; within 80 km, large variations in elevation — a maximum elevation change of 1,097 m.

The land around Ayutthaya is covered by artificial surfaces (38%) and trees (37%) within 3 km, cropland (52%) within 16 km, and cropland (56%) and trees (25%) within 80 km.

3 km
13 m
16 km
40 m
80 km
1,097 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Bang Ban 10 km · Nakhon Luang 13 km · Bang Pa-in 14 km · Wang Noi 20 km · Phak Hai 25 km · Tha Ruea 29 km · Nong Khae 31 km · Khlong Luang 33 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 Ayutthaya (14.3517°, 100.5774°, elevation 7 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).