Phayao weather in July

In July, Phayao sees average daytime highs of 32°C and overnight lows near 25°C, with 221 mm of rain across 24.8 wet days and about 13 hours of daylight. It is the 6th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 2% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 13 h 06 min at the start of July to 12 h 54 min by month's end. Set against the rest of the year, July is Phayao's 12th-clearest and 2nd-windiest month. For the whole year in context, see Phayao's year-round climate.

Daytime high
32°
6th warmest
Overnight low
25°
11th coldest
Rainfall
221 mm
24.8 wet days
Daylight
13 h 06 min
5:54 AM – 6:58 PM
Cloud cover
92%
12th clearest
Wind
7 km/h
2nd windiest
Solar energy
4.27 kWh/m²
Travel score
2.5
out of 10

Phayao is town in Phayao province, Thailand.

Air quality
Elevated
PM2.5 18 µg/m³ · 2019
Founded
1938

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 32°C through the month.

A typical July day in Phayao reaches about 32°C in the afternoon and slips back to 25°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 34°C. Set against its neighbours, July runs about 1°C cooler than June and on par with August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13225
23225
33225
43225
53225
63225
73225
83225
93225
103225
113225
123225
133225
143225
153225
163225
173225
183225
193225
203225
213225
223225
233125
243125
253125
263125
273125
283125
293125
303125
313125

How July really feels in Phayao

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
heat index over the day's high
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.

Phayao weather by month

How July compares with the rest of the year at a glance. July is the 6th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 16°152.5116.8
Feb32° / 17°61.211.35.2
Mar35° / 20°283.911.93.4
Apr35° / 24°719.512.42.4
May34° / 25°16619.712.92.4
Jun33° / 25°14421.513.12.4
Jul32° / 25°22124.8132.5
Aug31° / 25°25326.412.72.6
Sep32° / 24°2082312.12.8
Oct31° / 23°9814.711.64.1
Nov30° / 20°31511.16.0
Dec28° / 17°162.410.97.6

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 4% of July, with mostly cloudy or overcast conditions the remaining 94%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1694
2793
3694
4694
5694
6694
7694
8694
9694
10694
11694
12694
13694
14694
15694
16694
17694
18694
19694
20694
21694
22694
23694
24496
25496
26496
27496
28496
29496
30496
31496

Chance of precipitation in July

Any precipitation

Phayao gets around 221 mm of rain over 24.8 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 80% and peaks near 85% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
173
274
375
475
576
677
777
878
978
1079
1179
1280
1380
1480
1580
1680
1780
1880
1980
2081
2181
2281
2381
2482
2582
2683
2783
2884
2984
3085
3185

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
117920
217920
317821
417821
517722
617623
717623
817524
907525
1007525
1107426
1207426
1307426
1407426
1507426
1607327
1707327
1807327
1907426
2007426
2107426
2207426
2307426
2407426
2507426
2607426
2707426
2807426
2907426
3007327
3107327

Wind in July

Winds average 7 km/h in July.

Across July, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 13 h 06 min at the start of July to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over July. Sunrise moves from 5:50 AM to 6:00 AM, and sunset from 6:58 PM to 6:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:506:58
213.15:506:58
313.15:506:58
413.15:506:58
513.15:516:58
613.15:516:58
713.15:516:58
813.15:526:58
913.15:526:58
1013.15:526:58
1113.15:536:58
1213.15:536:58
1313.15:536:58
1413.15:546:58
1513.15:546:58
1613.15:546:58
1713.05:556:58
1813.05:556:57
1913.05:566:57
2013.05:566:57
2113.05:566:57
2213.05:576:56
2313.05:576:56
2413.05:576:56
2513.05:586:56
2613.05:586:55
2712.95:586:55
2812.95:596:55
2912.95:596:54
3012.96:006:54
3112.96:006:53

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.27 kWh/m².

For context, solar energy here swings from a low near 4.08 kWh/m² to a high of 6.36 kWh/m² in April across the year — July's 4.27 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.2Bright
194.2Bright
204.2Bright
214.2Bright
224.1Bright
234.1Bright
244.1Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.1Bright
304.1Bright
314.1Bright
Planning a trip in July

Hazard calendar for Phayao

In seasonPeak

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

Phayao sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

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

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

Is July a good time to visit Phayao?

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

2.5
Sightseeing
9th-best month of the year
4.0
Beach & pool
11th-best month of the year

July is a weaker month for outdoor sightseeing in Phayao.

What to pack for Phayao in July

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

In July, Phayao sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. About 25 days see rain.

light clothesrain gear

UV index in Phayao in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Phayao peaks around August 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 12UV 13Dec 18UV 7
UV index (midday)Level
Jan8Very high
Feb9Very high
Mar9Very high
Apr10Very high
May11Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Very high
Nov8Very high
Dec7High

Air quality in Phayao 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 Phayao is worst in March — around 51 µg/m³ PM2.5 (poor), about 5.9× the cleanest month (July, 9 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Phayao's WHO annual average of 18 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateGoodModerateMar 2049 µg/m³Jul 199 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb23Moderate
Mar51Poor
Apr39Poor
May16Moderate
Jun9Good
Jul9Good
Aug9Good
Sep9Good
Oct10Good
Nov11Good
Dec13Moderate
Location & terrain

Where is Phayao?

Phayao sits at 19.2°N, 99.9°E, 409 m above sea level, in Thailand. The nearest listed city is Dok Kham Tai, 12 km away.

San KamphaengChiang MaiNanMae ChanLampangLamphun

Topography around Phayao

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

Within 3 km, the terrain around Phayao has only modest variations in elevation — a maximum elevation change of 61 m around an average of 402 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,289 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,796 m.

The land around Phayao is covered by trees (33%) and water (30%) within 3 km, cropland (45%) and trees (44%) within 16 km, and trees (77%) within 80 km.

3 km
61 m
16 km
1,289 m
80 km
1,796 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Dok Kham Tai 12 km · Chiang Rai 80 km · San Kamphaeng 94 km · Chiang Mai 104 km · Nan 105 km · Mae Chan 106 km · Lampang 108 km · Lamphun 114 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 Phayao (19.192°, 99.8788°, elevation 409 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).