Chiang Rai weather in July

In July, Chiang Rai sees average daytime highs of 31°C and overnight lows near 24°C, with 398 mm of rain across 28.4 wet days and about 13.1 hours of daylight. It is the 6th-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 1% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 13 h 12 min at the start of July to 12 h 54 min by month's end. Set against the rest of the year, July is Chiang Rai's 12th-clearest and 5th-windiest month. For the whole year in context, see Chiang Rai's year-round climate.

Daytime high: 31°; 6th warmest
Overnight low: 24°; 11th coldest
Rainfall: 398 mm; 28.4 wet days
Daylight: 13 h 06 min; 5:53 AM – 6:59 PM
Cloud cover: 93%; 12th clearest
Wind: 5 km/h; 5th windiest
Solar energy: 4.22 kWh/m²
Travel score: 2.6; out of 10

Chiang Rai is city in Chiang Rai province, Thailand.

Air quality: Very high; PM2.5 37 µg/m³ · 2019
Density: 1,294/km²; people per km²
Founded: 1936

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

← June Chiang Rai year-round climate August →Best places to visit in July

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

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

A typical July day in Chiang Rai reaches about 31°C in the afternoon and slips back to 24°C overnight — a 7°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, July runs on par with June and on par with August.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	30	30	30	30	30	30	30	30	30	30	30	30	30	30
Avg low (°C)	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24

	Avg high (°C)	Avg low (°C)
1	31	24
2	31	24
3	31	24
4	31	24
5	31	24
6	31	24
7	31	24
8	31	24
9	31	24
10	31	24
11	31	24
12	31	24
13	31	24
14	31	24
15	31	24
16	31	24
17	31	24
18	30	24
19	30	24
20	30	24
21	30	24
22	30	24
23	30	24
24	30	24
25	30	24
26	30	24
27	30	24
28	30	24
29	30	24
30	30	24
31	30	24

How July really feels in Chiang Rai

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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

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

Chiang Rai weather by month

How July compares with the rest of the year at a glance. July is the 6th-warmest and 1st-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	28° / 14°	22	3	10.9	7.7
Feb	31° / 15°	13	2.4	11.3	5.9
Mar	33° / 18°	42	5.1	11.9	4.1
Apr	34° / 21°	132	11.8	12.4	3.1
May	32° / 23°	292	22.8	12.9	2.8
Jun	31° / 24°	297	26.2	13.2	2.5
Jul	31° / 24°	398	28.4	13.1	2.6
Aug	30° / 24°	383	28.8	12.7	2.6
Sep	30° / 23°	295	25.1	12.1	3.0
Oct	30° / 22°	139	17.8	11.5	4.4
Nov	28° / 18°	49	6.7	11.1	6.7
Dec	26° / 15°	27	3.7	10.8	8.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 3% of July, with mostly cloudy or overcast conditions the remaining 95%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	4	4	5	5	5	5	4	4	4	4	4	4	4	4	4	4
Cloudier (%)	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	96	96	95	95	95	95	96	96	96	96	96	96	96	96	96	96

	Clearer (%)	Cloudier (%)
1	5	95
2	5	95
3	5	95
4	5	95
5	5	95
6	5	95
7	5	95
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	4	96
17	4	96
18	5	95
19	5	95
20	5	95
21	5	95
22	4	96
23	4	96
24	4	96
25	4	96
26	4	96
27	4	96
28	4	96
29	4	96
30	4	96
31	4	96

Chance of precipitation in July

Any precipitation

Chiang Rai gets around 398 mm of rain over 28.4 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 91% and peaks near 94% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	88	88	89	89	90	90	90	91	91	91	91	91	91	91	91	91	91	91	91	91	91	92	92	92	92	93	93	93	93	94	94

	Rain chance (%)
1	88
2	88
3	89
4	89
5	90
6	90
7	90
8	91
9	91
10	91
11	91
12	91
13	91
14	91
15	91
16	91
17	91
18	91
19	91
20	91
21	91
22	92
23	92
24	92
25	92
26	93
27	93
28	93
29	93
30	94
31	94

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 69% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Oppressive (%)	72	71	71	70	69	68	67	66	65	65	64	64	64	64	64	65	65	66	67	68	69	70	71	72	73	74	74	75	75	76	76
Miserable (%)	28	29	29	30	31	32	33	34	35	35	36	36	36	36	36	35	35	34	33	32	31	30	29	28	27	26	26	25	25	24	24

	Oppressive (%)	Miserable (%)
1	72	28
2	71	29
3	71	29
4	70	30
5	69	31
6	68	32
7	67	33
8	66	34
9	65	35
10	65	35
11	64	36
12	64	36
13	64	36
14	64	36
15	64	36
16	65	35
17	65	35
18	66	34
19	67	33
20	68	32
21	69	31
22	70	30
23	71	29
24	72	28
25	73	27
26	74	26
27	74	26
28	75	25
29	75	25
30	76	24
31	76	24

Wind in July

Winds average 5 km/h in July.

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

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	5	calm
2	5	calm
3	5	calm
4	5	calm
5	5	calm
6	5	calm
7	5	calm
8	5	calm
9	5	calm
10	5	calm
11	5	calm
12	5	calm
13	5	calm
14	5	calm
15	5	calm
16	5	calm
17	5	calm
18	5	calm
19	5	calm
20	5	calm
21	5	calm
22	5	calm
23	5	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm
31	5	calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 13 h 12 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 18 minutes over July. Sunrise moves from 5:48 AM to 5:59 AM, and sunset from 7:00 PM to 6:55 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	13.2	13.2	13.2	13.2	13.2	13.2	13.2	13.2	13.2	13.1	13.1	13.1	13.1	13.1	13.1	13.1	13.1	13.1	13.1	13.1	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.9	12.9
Sunrise (AM)	5:48	5:49	5:49	5:49	5:50	5:50	5:50	5:51	5:51	5:51	5:52	5:52	5:52	5:53	5:53	5:53	5:54	5:54	5:55	5:55	5:55	5:56	5:56	5:56	5:57	5:57	5:58	5:58	5:58	5:59	5:59
Sunset (PM)	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	7:00	6:59	6:59	6:59	6:59	6:59	6:59	6:58	6:58	6:58	6:58	6:57	6:57	6:57	6:56	6:56	6:55	6:55	6:55

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.2	5:48	7:00
2	13.2	5:49	7:00
3	13.2	5:49	7:00
4	13.2	5:49	7:00
5	13.2	5:50	7:00
6	13.2	5:50	7:00
7	13.2	5:50	7:00
8	13.2	5:51	7:00
9	13.2	5:51	7:00
10	13.1	5:51	7:00
11	13.1	5:52	7:00
12	13.1	5:52	7:00
13	13.1	5:52	7:00
14	13.1	5:53	6:59
15	13.1	5:53	6:59
16	13.1	5:53	6:59
17	13.1	5:54	6:59
18	13.1	5:54	6:59
19	13.1	5:55	6:59
20	13.1	5:55	6:58
21	13.0	5:55	6:58
22	13.0	5:56	6:58
23	13.0	5:56	6:58
24	13.0	5:56	6:57
25	13.0	5:57	6:57
26	13.0	5:57	6:57
27	13.0	5:58	6:56
28	13.0	5:58	6:56
29	13.0	5:58	6:55
30	12.9	5:59	6:55
31	12.9	5:59	6:55

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.22 kWh/m².

For context, solar energy here swings from a low near 4.1 kWh/m² to a high of 6.3 kWh/m² in April across the year — July's 4.22 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	4.5	4.5	4.5	4.5	4.4	4.4	4.4	4.4	4.4	4.3	4.3	4.3	4.3	4.3	4.2	4.2	4.2	4.2	4.1	4.1	4.1	4.1	4.1	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.0
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.5	Bright
2	4.5	Bright
3	4.5	Bright
4	4.5	Bright
5	4.4	Bright
6	4.4	Bright
7	4.4	Bright
8	4.4	Bright
9	4.4	Bright
10	4.3	Bright
11	4.3	Bright
12	4.3	Bright
13	4.3	Bright
14	4.3	Bright
15	4.2	Bright
16	4.2	Bright
17	4.2	Bright
18	4.2	Bright
19	4.1	Bright
20	4.1	Bright
21	4.1	Bright
22	4.1	Bright
23	4.1	Bright
24	4.0	Bright
25	4.0	Bright
26	4.0	Bright
27	4.0	Bright
28	4.0	Bright
29	4.0	Bright
30	4.0	Bright
31	4.0	Bright

Planning a trip in July

Hazard calendar for Chiang Rai

In seasonPeak

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

Chiang Rai'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 July a good time to visit Chiang Rai?

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

2.6

Sightseeing

10th-best month of the year

3.7

Beach & pool

11th-best month of the year

July is a weaker month for outdoor sightseeing in Chiang Rai.

What to pack for Chiang Rai in July

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

In July, Chiang Rai sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. About 28 days see rain.

light clothesrain gear

UV index in Chiang Rai 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 Chiang Rai peaks around July 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 7 (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)	7	9	9	10	11	13	13	13	11	10	8	7
Level	Very high	Very high	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high	High

	UV index (midday)	Level
Jan	7	Very high
Feb	9	Very high
Mar	9	Very high
Apr	10	Very high
May	11	Extreme
Jun	13	Extreme
Jul	13	Extreme
Aug	13	Extreme
Sep	11	Extreme
Oct	10	Very high
Nov	8	Very high
Dec	7	High

Air quality in Chiang Rai 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 Chiang Rai is worst in April — around 142 µg/m³ PM2.5 (unhealthy), about 12.0× the cleanest month (July, 12 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Chiang Rai's WHO annual average of 37 µg/m³.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	21	36	117	142	34	14	12	12	12	13	14	17
Level	Moderate	Poor	Unhealthy	Unhealthy	Moderate	Moderate	Good	Good	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	21	Moderate
Feb	36	Poor
Mar	117	Unhealthy
Apr	142	Unhealthy
May	34	Moderate
Jun	14	Moderate
Jul	12	Good
Aug	12	Good
Sep	12	Moderate
Oct	13	Moderate
Nov	14	Moderate
Dec	17	Moderate

Location & terrain

Where is Chiang Rai?

Chiang Rai sits at 19.9°N, 99.8°E, 401 m above sea level, in Thailand. The nearest listed city is Mae Chan, 27 km away.

Topography around Chiang Rai

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

Within 3 km, the terrain around Chiang Rai has only modest variations in elevation — a maximum elevation change of 66 m around an average of 398 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 815 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,937 m.

The land around Chiang Rai is covered by artificial surfaces (43%) and trees (36%) within 3 km, trees (52%) and cropland (33%) within 16 km, and trees (70%) and cropland (21%) within 80 km.

3 km

66 m

artificial surfaces 43%

16 km

815 m

trees 52%

80 km

1,937 m

trees 70%

treesgrasslandcroplandartificial surfaceswater

← June Chiang Rai year-round climate August →Best places to visit in July

July weather nearby: Mae Chan 27 km · Ban Khoan 56 km · Mae Sai 59 km · Tachilek 60 km · Ban Houakhoua 75 km · Phayao 80 km · Dok Kham Tai 85 km · San Kamphaeng 149 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 Chiang Rai (19.9086°, 99.8325°, elevation 401 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).

	Avg high (°C)	Avg low (°C)
1	31	24
2	31	24
3	31	24
4	31	24
5	31	24
6	31	24
7	31	24
8	31	24
9	31	24
10	31	24
11	31	24
12	31	24
13	31	24
14	31	24
15	31	24
16	31	24
17	31	24
18	30	24
19	30	24
20	30	24
21	30	24
22	30	24
23	30	24
24	30	24
25	30	24
26	30	24
27	30	24
28	30	24
29	30	24
30	30	24
31	30	24

	Clearer (%)	Cloudier (%)
1	5	95
2	5	95
3	5	95
4	5	95
5	5	95
6	5	95
7	5	95
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	4	96
17	4	96
18	5	95
19	5	95
20	5	95
21	5	95
22	4	96
23	4	96
24	4	96
25	4	96
26	4	96
27	4	96
28	4	96
29	4	96
30	4	96
31	4	96

	Rain chance (%)
1	88
2	88
3	89
4	89
5	90
6	90
7	90
8	91
9	91
10	91
11	91
12	91
13	91
14	91
15	91
16	91
17	91
18	91
19	91
20	91
21	91
22	92
23	92
24	92
25	92
26	93
27	93
28	93
29	93
30	94
31	94

	Oppressive (%)	Miserable (%)
1	72	28
2	71	29
3	71	29
4	70	30
5	69	31
6	68	32
7	67	33
8	66	34
9	65	35
10	65	35
11	64	36
12	64	36
13	64	36
14	64	36
15	64	36
16	65	35
17	65	35
18	66	34
19	67	33
20	68	32
21	69	31
22	70	30
23	71	29
24	72	28
25	73	27
26	74	26
27	74	26
28	75	25
29	75	25
30	76	24
31	76	24

	Avg high (°C)	Avg low (°C)
1	31	24
2	31	24
3	31	24
4	31	24
5	31	24
6	31	24
7	31	24
8	31	24
9	31	24
10	31	24
11	31	24
12	31	24
13	31	24
14	31	24
15	31	24
16	31	24
17	31	24
18	30	24
19	30	24
20	30	24
21	30	24
22	30	24
23	30	24
24	30	24
25	30	24
26	30	24
27	30	24
28	30	24
29	30	24
30	30	24
31	30	24

	Clearer (%)	Cloudier (%)
1	5	95
2	5	95
3	5	95
4	5	95
5	5	95
6	5	95
7	5	95
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	4	96
17	4	96
18	5	95
19	5	95
20	5	95
21	5	95
22	4	96
23	4	96
24	4	96
25	4	96
26	4	96
27	4	96
28	4	96
29	4	96
30	4	96
31	4	96

	Rain chance (%)
1	88
2	88
3	89
4	89
5	90
6	90
7	90
8	91
9	91
10	91
11	91
12	91
13	91
14	91
15	91
16	91
17	91
18	91
19	91
20	91
21	91
22	92
23	92
24	92
25	92
26	93
27	93
28	93
29	93
30	94
31	94

	Oppressive (%)	Miserable (%)
1	72	28
2	71	29
3	71	29
4	70	30
5	69	31
6	68	32
7	67	33
8	66	34
9	65	35
10	65	35
11	64	36
12	64	36
13	64	36
14	64	36
15	64	36
16	65	35
17	65	35
18	66	34
19	67	33
20	68	32
21	69	31
22	70	30
23	71	29
24	72	28
25	73	27
26	74	26
27	74	26
28	75	25
29	75	25
30	76	24
31	76	24

	Avg high (°C)	Avg low (°C)
1	31	24
2	31	24
3	31	24
4	31	24
5	31	24
6	31	24
7	31	24
8	31	24
9	31	24
10	31	24
11	31	24
12	31	24
13	31	24
14	31	24
15	31	24
16	31	24
17	31	24
18	30	24
19	30	24
20	30	24
21	30	24
22	30	24
23	30	24
24	30	24
25	30	24
26	30	24
27	30	24
28	30	24
29	30	24
30	30	24
31	30	24

	Clearer (%)	Cloudier (%)
1	5	95
2	5	95
3	5	95
4	5	95
5	5	95
6	5	95
7	5	95
8	5	95
9	5	95
10	5	95
11	5	95
12	5	95
13	5	95
14	5	95
15	5	95
16	4	96
17	4	96
18	5	95
19	5	95
20	5	95
21	5	95
22	4	96
23	4	96
24	4	96
25	4	96
26	4	96
27	4	96
28	4	96
29	4	96
30	4	96
31	4	96

	Rain chance (%)
1	88
2	88
3	89
4	89
5	90
6	90
7	90
8	91
9	91
10	91
11	91
12	91
13	91
14	91
15	91
16	91
17	91
18	91
19	91
20	91
21	91
22	92
23	92
24	92
25	92
26	93
27	93
28	93
29	93
30	94
31	94

	Oppressive (%)	Miserable (%)
1	72	28
2	71	29
3	71	29
4	70	30
5	69	31
6	68	32
7	67	33
8	66	34
9	65	35
10	65	35
11	64	36
12	64	36
13	64	36
14	64	36
15	64	36
16	65	35
17	65	35
18	66	34
19	67	33
20	68	32
21	69	31
22	70	30
23	71	29
24	72	28
25	73	27
26	74	26
27	74	26
28	75	25
29	75	25
30	76	24
31	76	24