Lai Châu weather in July

In July, Lai Châu sees average daytime highs of 27°C and overnight lows near 22°C, with 389 mm of rain across 29.5 wet days and about 13.2 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 3% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 13 h 24 min at the start of July to 13 h 06 min by month's end. Set against the rest of the year, July is Lai Châu's 12th-clearest and 8th-windiest month. For the whole year in context, see Lai Châu's year-round climate.

Daytime high: 27°; 3rd warmest
Overnight low: 22°; 12th coldest
Rainfall: 389 mm; 29.5 wet days
Daylight: 13 h 12 min; 5:34 AM – 6:49 PM
Cloud cover: 89%; 12th clearest
Wind: 3 km/h; 8th windiest
Solar energy: 4.11 kWh/m²
Travel score: 3.4; out of 10

← June Lai Châu 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 27°C through the month.

A typical July day in Lai Châu reaches about 27°C in the afternoon and slips back to 22°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 30°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)	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	28	28	28	28
Avg low (°C)	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21

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

Lai Châu weather by month

How July compares with the rest of the year at a glance. July is the 3rd-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	18° / 10°	63	10	10.8	5.9
Feb	20° / 11°	53	9.4	11.2	6.4
Mar	24° / 14°	106	13.8	11.8	6.5
Apr	26° / 17°	136	18.7	12.5	5.4
May	27° / 20°	222	24.4	13.1	4.3
Jun	28° / 21°	325	28.5	13.3	3.4
Jul	27° / 22°	389	29.5	13.2	3.4
Aug	28° / 21°	371	28.7	12.8	3.5
Sep	27° / 20°	201	22.2	12.1	4.5
Oct	25° / 18°	96	15	11.5	6.0
Nov	22° / 14°	50	8.7	10.9	6.9
Dec	19° / 11°	49	7.4	10.7	6.5

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 6% of July, with mostly cloudy or overcast conditions the remaining 91%.

	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 (%)	7	7	8	8	8	8	8	8	8	8	8	8	8	8	8	7	7	7	7	8	8	8	9	9	9	11	11	11	11	11	11
Cloudier (%)	93	93	92	92	92	92	92	92	92	92	92	92	92	92	92	93	93	93	93	92	92	92	91	91	91	89	89	89	89	89	89

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

Chance of precipitation in July

Any precipitation

Lai Châu gets around 389 mm of rain over 29.5 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 96% and peaks near 97% 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 (%)	96	96	96	95	95	95	95	95	94	95	95	95	95	95	95	96	96	96	96	96	96	96	96	96	97	97	97	97	96	96	96

	Rain chance (%)
1	96
2	96
3	96
4	95
5	95
6	95
7	95
8	95
9	94
10	95
11	95
12	95
13	95
14	95
15	95
16	96
17	96
18	96
19	96
20	96
21	96
22	96
23	96
24	96
25	97
26	97
27	97
28	97
29	96
30	96
31	96

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 55% 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
Muggy (%)	37	38	39	39	40	40	41	42	43	44	44	45	46	46	47	47	48	48	48	49	49	49	49	48	48	48	48	48	47	47	46
Oppressive (%)	63	62	61	61	60	60	59	58	57	56	56	55	54	54	53	53	52	52	52	51	51	51	51	52	52	52	52	52	53	53	54

	Muggy (%)	Oppressive (%)
1	37	63
2	38	62
3	39	61
4	39	61
5	40	60
6	40	60
7	41	59
8	42	58
9	43	57
10	44	56
11	44	56
12	45	55
13	46	54
14	46	54
15	47	53
16	47	53
17	48	52
18	48	52
19	48	52
20	49	51
21	49	51
22	49	51
23	49	51
24	48	52
25	48	52
26	48	52
27	48	52
28	48	52
29	47	53
30	47	53
31	46	54

Wind in July

Winds average 3 km/h in July.

Across July, daily wind ranges from about 3 km/h on the calmest days to 3 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)	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3
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	3	calm
2	3	calm
3	3	calm
4	3	calm
5	3	calm
6	3	calm
7	3	calm
8	3	calm
9	3	calm
10	3	calm
11	3	calm
12	3	calm
13	3	calm
14	3	calm
15	3	calm
16	3	calm
17	3	calm
18	3	calm
19	3	calm
20	3	calm
21	3	calm
22	3	calm
23	3	calm
24	3	calm
25	3	calm
26	3	calm
27	3	calm
28	3	calm
29	3	calm
30	3	calm
31	3	calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 13 h 24 min at the start of July to 13 h 06 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 5:29 AM to 5:41 AM, and sunset from 6:50 PM to 6:44 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)	13.4	13.4	13.3	13.3	13.3	13.3	13.3	13.3	13.3	13.3	13.3	13.3	13.3	13.3	13.3	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
Sunrise (AM)	5:29	5:29	5:29	5:30	5:30	5:30	5:31	5:31	5:32	5:32	5:32	5:33	5:33	5:34	5:34	5:34	5:35	5:35	5:36	5:36	5:36	5:37	5:37	5:38	5:38	5:39	5:39	5:39	5:40	5:40	5:41
Sunset (PM)	6:50	6:50	6:50	6:50	6:50	6:50	6:50	6:50	6:50	6:50	6:50	6:50	6:50	6:50	6:49	6:49	6:49	6:49	6:49	6:48	6:48	6:48	6:47	6:47	6:47	6:46	6:46	6:45	6:45	6:44	6:44

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.4	5:29	6:50
2	13.4	5:29	6:50
3	13.3	5:29	6:50
4	13.3	5:30	6:50
5	13.3	5:30	6:50
6	13.3	5:30	6:50
7	13.3	5:31	6:50
8	13.3	5:31	6:50
9	13.3	5:32	6:50
10	13.3	5:32	6:50
11	13.3	5:32	6:50
12	13.3	5:33	6:50
13	13.3	5:33	6:50
14	13.3	5:34	6:50
15	13.3	5:34	6:49
16	13.2	5:34	6:49
17	13.2	5:35	6:49
18	13.2	5:35	6:49
19	13.2	5:36	6:49
20	13.2	5:36	6:48
21	13.2	5:36	6:48
22	13.2	5:37	6:48
23	13.2	5:37	6:47
24	13.2	5:38	6:47
25	13.1	5:38	6:47
26	13.1	5:39	6:46
27	13.1	5:39	6:46
28	13.1	5:39	6:45
29	13.1	5:40	6:45
30	13.1	5:40	6:44
31	13.1	5:41	6:44

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.11 kWh/m².

For context, solar energy here swings from a low near 2.66 kWh/m² to a high of 4.99 kWh/m² in April across the year — July's 4.11 kWh/m² falls in the middle.

	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)	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.2	4.2	4.2	4.2	4.2	4.3	4.3	4.3	4.3	4.3
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	4.0	Bright
2	4.0	Bright
3	4.0	Bright
4	4.0	Bright
5	4.0	Bright
6	4.0	Bright
7	4.0	Bright
8	4.0	Bright
9	4.0	Bright
10	4.0	Bright
11	4.0	Bright
12	4.0	Bright
13	4.1	Bright
14	4.1	Bright
15	4.1	Bright
16	4.1	Bright
17	4.1	Bright
18	4.1	Bright
19	4.1	Bright
20	4.1	Bright
21	4.1	Bright
22	4.2	Bright
23	4.2	Bright
24	4.2	Bright
25	4.2	Bright
26	4.2	Bright
27	4.3	Bright
28	4.3	Bright
29	4.3	Bright
30	4.3	Bright
31	4.3	Bright

Planning a trip in July

Hazard calendar for Lai Châu

In seasonPeak

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

Lai Châu'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 Lai Châu?

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

3.4

Sightseeing

11th-best month of the year

3.6

Beach & pool

9th-best month of the year

July is a weaker month for outdoor sightseeing in Lai Châu.

What to pack for Lai Châu in July

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

In July, Lai Châu sees daytime highs around 27°C and nights near 22°C. Pack light clothes and rain gear. About 30 days see rain.

light clothesrain gear

UV index in Lai Châu 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 Lai Châu peaks around June 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 5 (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	11	9	11	14	13	12	10	9	8	5
Level	High	Very high	Extreme	Very high	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Very high	High

	UV index (midday)	Level
Jan	7	High
Feb	9	Very high
Mar	11	Extreme
Apr	9	Very high
May	11	Extreme
Jun	14	Extreme
Jul	13	Extreme
Aug	12	Extreme
Sep	10	Very high
Oct	9	Very high
Nov	8	Very high
Dec	5	High

Air quality in Lai Châu 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 Lai Châu is worst in April — around 70 µg/m³ PM2.5 (unhealthy), about 5.0× the cleanest month (July, 14 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)	25	33	54	70	28	15	14	15	18	22	23	25
Level	Moderate	Moderate	Poor	Unhealthy	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	25	Moderate
Feb	33	Moderate
Mar	54	Poor
Apr	70	Unhealthy
May	28	Moderate
Jun	15	Moderate
Jul	14	Moderate
Aug	15	Moderate
Sep	18	Moderate
Oct	22	Moderate
Nov	23	Moderate
Dec	25	Moderate

Location & terrain

Where is Lai Châu?

Lai Châu sits at 22.4°N, 103.5°E, 919 m above sea level, in Vietnam. The nearest listed city is Sapa, 40 km away.

Topography around Lai Châu

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

Within 3 km, the terrain around Lai Châu has significant variations in elevation — a maximum elevation change of 544 m around an average of 1,001 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,836 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,035 m.

The land around Lai Châu is covered by trees (43%) and grassland (32%) within 3 km, trees (74%) within 16 km, and trees (85%) within 80 km.

3 km

544 m

trees 43%

16 km

2,836 m

trees 74%

80 km

3,035 m

trees 85%

treesgrasslandcroplandartificial surfaceswater

← June Lai Châu year-round climate August →Best places to visit in July

July weather nearby: Sapa 40 km · Lào Cai 54 km · Mường Lay 55 km · Thị Trấn Phố Lu 75 km · Thị Trấn Thuận Châu 109 km · Ít Ong 114 km · Dien Bien Phu 121 km · Sơn La 128 km

Vietnam travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type A / B / C / F; 220 V · 50 Hz
Prices: ≈ 29% of US; price level, 2025
GDP per capita: $5,066; 2025
Happiness: 6.4 / 10; World Happiness, 2025
Safe drinking water: 59%; of population, 2024
Homicide rate: 1.5; per 100k, 2011
Road deaths: 30.6; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Moderate; EF EPI 500
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 Lai Châu (22.3964°, 103.4582°, elevation 919 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	27	22
2	27	22
3	27	22
4	27	22
5	27	22
6	27	22
7	27	22
8	27	22
9	27	22
10	27	22
11	27	22
12	27	22
13	27	22
14	27	22
15	27	22
16	27	22
17	27	21
18	27	21
19	27	21
20	27	21
21	27	21
22	27	21
23	27	21
24	27	21
25	27	21
26	27	21
27	27	21
28	28	21
29	28	21
30	28	21
31	28	21

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

	Rain chance (%)
1	96
2	96
3	96
4	95
5	95
6	95
7	95
8	95
9	94
10	95
11	95
12	95
13	95
14	95
15	95
16	96
17	96
18	96
19	96
20	96
21	96
22	96
23	96
24	96
25	97
26	97
27	97
28	97
29	96
30	96
31	96

	Muggy (%)	Oppressive (%)
1	37	63
2	38	62
3	39	61
4	39	61
5	40	60
6	40	60
7	41	59
8	42	58
9	43	57
10	44	56
11	44	56
12	45	55
13	46	54
14	46	54
15	47	53
16	47	53
17	48	52
18	48	52
19	48	52
20	49	51
21	49	51
22	49	51
23	49	51
24	48	52
25	48	52
26	48	52
27	48	52
28	48	52
29	47	53
30	47	53
31	46	54

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

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

	Rain chance (%)
1	96
2	96
3	96
4	95
5	95
6	95
7	95
8	95
9	94
10	95
11	95
12	95
13	95
14	95
15	95
16	96
17	96
18	96
19	96
20	96
21	96
22	96
23	96
24	96
25	97
26	97
27	97
28	97
29	96
30	96
31	96

	Muggy (%)	Oppressive (%)
1	37	63
2	38	62
3	39	61
4	39	61
5	40	60
6	40	60
7	41	59
8	42	58
9	43	57
10	44	56
11	44	56
12	45	55
13	46	54
14	46	54
15	47	53
16	47	53
17	48	52
18	48	52
19	48	52
20	49	51
21	49	51
22	49	51
23	49	51
24	48	52
25	48	52
26	48	52
27	48	52
28	48	52
29	47	53
30	47	53
31	46	54

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

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

	Rain chance (%)
1	96
2	96
3	96
4	95
5	95
6	95
7	95
8	95
9	94
10	95
11	95
12	95
13	95
14	95
15	95
16	96
17	96
18	96
19	96
20	96
21	96
22	96
23	96
24	96
25	97
26	97
27	97
28	97
29	96
30	96
31	96

	Muggy (%)	Oppressive (%)
1	37	63
2	38	62
3	39	61
4	39	61
5	40	60
6	40	60
7	41	59
8	42	58
9	43	57
10	44	56
11	44	56
12	45	55
13	46	54
14	46	54
15	47	53
16	47	53
17	48	52
18	48	52
19	48	52
20	49	51
21	49	51
22	49	51
23	49	51
24	48	52
25	48	52
26	48	52
27	48	52
28	48	52
29	47	53
30	47	53
31	46	54