Vientiane, Laos — Weather in July 2026

Monthly climate averages for Vientiane, Laos. Based on 10-year ERA5 reanalysis data.

Am Tropical Monsoon
1.7 /10
Wet

July is a wet month in Vientiane

Climate Overview

Vientiane, Laos in July has hot conditions, with highs reaching 30.4°C (87°F) and afternoons the warmest part of the day. Rain falls on about 26 days this month, totalling around 343 mm.

This month falls at the middle of Summer. The combination of heat and frequent rain creates tropical monsoon conditions.

Temperatures remain fairly steady throughout July, with daily highs around 30°C (86°F).

July sees fairly even rainfall, totalling about 344 mm across the month.

The warmest days tend to fall around the 16th, averaging 31°C (88°F).

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Monthly July Averages

Temperature
30°C / 25°C
Feels Like
37°C / 30°C
Rain
26 days · 343 mm
Sunshine
7.7h / day
Humidity
84% — Very Muggy
Wind
10 km/h
Wind Direction
SSW (211°)
Gusts
30 km/h
Daylight
13.1 h
Cloud Cover
90%
Clear Sky Days
0.1
UV Index
6.5 — High
Dew Point
25°C — Oppressive
Moon Phase
New Moon · 0%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

36°C 33°C 30°C 27°C 24°C 21°C 151015202531
High Low

Daily Precipitation

0 mm 4 mm 8 mm 12 mm 16 mm 151015202531
Rainfall

Daily Sunshine

0h 3h 6h 9h 12h 151015202531
Sunshine

Daily Wind Speed

0 4 8 12 16 20 151015202531
Wind Speed
Sun Position
Sunrise 05:42
Daylight 13.1h
Sunset 18:49

What to Expect

Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain most often builds later in the day, so mornings are typically the driest window and afternoon showers are more likely.

Recent yearly records for July have stayed close to the long-run average.

Compare Months

January best
Excellent
Temp
28°C / 17°C
Feels Like
29°C / 18°C
Rain
2days (13 mm) Excellent
Sun
9.7h Good
Humidity
64% Muggy
UV
6.3 High
View Details
February best
Excellent
Temp
30°C / 18°C
Feels Like
32°C / 19°C
Rain
2days (22 mm) Excellent
Sun
10.4h Excellent
Humidity
61% Muggy
UV
7.3 Very High
View Details
March
Good
Temp
33°C / 22°C
Feels Like
37°C / 25°C
Rain
5days (29 mm) Good
Sun
10.7h Excellent
Humidity
60% Moderate
UV
8.2 Very High
View Details
April
Poor
Temp
35°C / 25°C
Feels Like
40°C / 29°C
Rain
8days (47 mm) Wet
Sun
11.1h Excellent
Humidity
60% Moderate
UV
8.7 Very High
View Details
May
Wet
Temp
33°C / 25°C
Feels Like
39°C / 30°C
Rain
20days (207 mm) Wet
Sun
9.8h Good
Humidity
74% Muggy
UV
8 Very High
View Details
June
Wet
Temp
31°C / 25°C
Feels Like
38°C / 31°C
Rain
25days (269 mm) Wet
Sun
8.9h Good
Humidity
83% Humid
UV
7.3 Very High
View Details
July
Wet
Temp
30°C / 25°C
Feels Like
37°C / 30°C
Rain
26days (343 mm) Wet
Sun
7.7h Good
Humidity
84% Humid
UV
6.5 High
View Details
August
Wet
Temp
30°C / 25°C
Feels Like
36°C / 30°C
Rain
26days (396 mm) Wet
Sun
7.2h Good
Humidity
86% Very Muggy
UV
6.5 High
View Details
September
Wet
Temp
30°C / 24°C
Feels Like
37°C / 29°C
Rain
25days (305 mm) Wet
Sun
8.1h Good
Humidity
85% Humid
UV
6.9 High
View Details
October
Fair
Temp
30°C / 23°C
Feels Like
35°C / 27°C
Rain
11days (107 mm) Wet
Sun
9.4h Good
Humidity
79% Humid
UV
7.1 Very High
View Details
November best
Excellent
Temp
29°C / 21°C
Feels Like
33°C / 23°C
Rain
4days (24 mm) Good
Sun
9.5h Good
Humidity
70% Muggy
UV
6.2 High
View Details
December best
Excellent
Temp
27°C / 17°C
Feels Like
29°C / 18°C
Rain
1days (6 mm) Excellent
Sun
9.6h Good
Humidity
64% Muggy
UV
6 High
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January best 28°C / 17°C 29°C / 18°C 2days (13 mm) Excellent 9.7h Good 64% Muggy 6.3 High Excellent View Details
February best 30°C / 18°C 32°C / 19°C 2days (22 mm) Excellent 10.4h Excellent 61% Muggy 7.3 Very High Excellent View Details
March 33°C / 22°C 37°C / 25°C 5days (29 mm) Good 10.7h Excellent 60% Moderate 8.2 Very High Good View Details
April 35°C / 25°C 40°C / 29°C 8days (47 mm) Wet 11.1h Excellent 60% Moderate 8.7 Very High Poor View Details
May 33°C / 25°C 39°C / 30°C 20days (207 mm) Wet 9.8h Good 74% Muggy 8 Very High Wet View Details
June 31°C / 25°C 38°C / 31°C 25days (269 mm) Wet 8.9h Good 83% Humid 7.3 Very High Wet View Details
July 30°C / 25°C 37°C / 30°C 26days (343 mm) Wet 7.7h Good 84% Humid 6.5 High Wet View Details
August 30°C / 25°C 36°C / 30°C 26days (396 mm) Wet 7.2h Good 86% Very Muggy 6.5 High Wet View Details
September 30°C / 24°C 37°C / 29°C 25days (305 mm) Wet 8.1h Good 85% Humid 6.9 High Wet View Details
October 30°C / 23°C 35°C / 27°C 11days (107 mm) Wet 9.4h Good 79% Humid 7.1 Very High Fair View Details
November best 29°C / 21°C 33°C / 23°C 4days (24 mm) Good 9.5h Good 70% Muggy 6.2 High Excellent View Details
December best 27°C / 17°C 29°C / 18°C 1days (6 mm) Excellent 9.6h Good 64% Muggy 6 High Excellent View Details

What to Wear

Light, breathable fabrics like cotton and linen are essential. Opt for loose-fitting clothing in light colors to stay cool.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaWaterproof jacketWaterproof shoesBreathable clothingSunscreen (SPF 30+)Sun hatSunglasses

Frequently Asked Questions

July is typically wet for visiting Vientiane, with average highs of 30°C (87°F) and around 26 rainy days. Vientiane, Laos in July has hot conditions, with highs reaching 30.4°C (87°F) and afternoons the warmest part of the day
Vientiane typically sees around 26 rainy days in July with 343 mm (13.5 in) of total rainfall. Pack a waterproof jacket.
Nights stay pleasantly warm in Vientiane during July, around 25°C (77°F). Light evening wear is sufficient.
With highs of 30°C (87°F) and lows of 25°C (77°F) in July, we recommend: Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). Comfortable walking shoes are essential.
July is not the most favourable month weather-wise in Vientiane. Consider visiting during months with milder temperatures or less rainfall for a better experience.
The average UV index in Vientiane during July is 7 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.
Vientiane gets approximately 13 hours of daylight per day in July, with around 8 hours of sunshine.
Snow is uncommon in Vientiane during July based on 10-year climate averages.

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