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Weather in Vientiane for May 2026

Your guide to Vientiane weather in May - trends and predictions

    Temperatures

  • In general, the average temperature in Vientiane at the beginning of May is 39.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 32.7 °C by the end of May.

    • Rain 🌧️

  • Vientiane experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 190.7 mm.

Average dry days
3
Dry days
Average rainy days
28
Rainy days
Average snowy days
0
Snow days
Average temperatures
35°/25°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
62 %
Avg humidity

Vientiane Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Heavy rain at times
39°
2
Patchy rain possible
39°
3
Heavy rain at times
37°
4
Patchy rain possible
39°
5
Patchy rain possible
41°
6
Patchy rain possible
40°
7
Patchy light drizzle
39°
8
Patchy rain possible
38°
9
Moderate or heavy rain shower
34°
10
Moderate or heavy rain shower
33°
11
Moderate or heavy rain shower
34°
12
Patchy rain possible
34°
13
Heavy rain at times
33°
14
Moderate or heavy rain shower
32°
15
Moderate or heavy rain shower
33°
16
Partly cloudy
35°
17
Light rain shower
36°
18
Partly cloudy
36°
19
Partly cloudy
37°
20
Partly cloudy
38°
21
Partly cloudy
36°
22
Patchy rain possible
35°
23
Heavy rain at times
33°
24
Light rain shower
31°
25
Moderate rain at times
33°
26
Light rain shower
32°
27
Light rain shower
32°
28
Moderate or heavy rain shower
32°
29
Patchy rain possible
32°
30
Patchy rain possible
35°
31
Light rain shower
33°

Temperatures trend during May in Vientiane

See the weather trend as well as the moving average line

May weather in Vientiane day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Heavy rain at times
Heavy rain at times
 39° /25° 1.9 mm 9
2 May Patchy rain possible
Patchy rain possible
 39° /26° 0.5 mm 8
3 May Heavy rain at times
Heavy rain at times
 37° /25° 6.7 mm 8
4 May Patchy rain possible
Patchy rain possible
 39° /25° 1.4 mm 8
5 May Patchy rain possible
Patchy rain possible
 41° /27° 1 mm 9
6 May Patchy rain possible
Patchy rain possible
 40° /26° 2.8 mm 9
7 May Patchy light drizzle
Patchy light drizzle
 39° /26° 7.9 mm 8
8 May Patchy rain possible
Patchy rain possible
 38° /25° 1.7 mm 8
9 May Moderate or heavy rain shower
Moderate or heavy rain shower
 34° /24° 10.4 mm 7
10 May Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /24° 6.6 mm 7
11 May Moderate or heavy rain shower
Moderate or heavy rain shower
 34° /24° 9.8 mm 7
12 May Patchy rain possible
Patchy rain possible
 34° /23° 7.7 mm 7
13 May Heavy rain at times
Heavy rain at times
 33° /24° 6.3 mm 7
14 May Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /24° 11 mm 7
15 May Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /24° 5.1 mm 7
16 May Partly cloudy
Partly cloudy
 35° /24° 1.9 mm 8
17 May Light rain shower
Light rain shower
 36° /24° 3.9 mm 8
18 May Partly cloudy
Partly cloudy
 36° /25° 2.4 mm 8
19 May Partly cloudy
Partly cloudy
 37° /25° 5.6 mm 8
20 May Partly cloudy
Partly cloudy
 38° /25° 20 mm 8
21 May Partly cloudy
Partly cloudy
 36° /25° 3.5 mm 8
22 May Patchy rain possible
Patchy rain possible
 35° /25° 6.1 mm 8
23 May Heavy rain at times
Heavy rain at times
 33° /24° 12.7 mm 7
24 May Light rain shower
Light rain shower
 31° /23° 13.1 mm 7
25 May Moderate rain at times
Moderate rain at times
 33° /23° 7.7 mm 7
26 May Light rain shower
Light rain shower
 32° /23° 7.1 mm 7
27 May Light rain shower
Light rain shower
 32° /23° 5.1 mm 7
28 May Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /24° 13 mm 7
29 May Patchy rain possible
Patchy rain possible
 32° /24° 6 mm 7
30 May Patchy rain possible
Patchy rain possible
 35° /25° 5.1 mm 8
31 May Light rain shower
Light rain shower
 33° /25° 6.8 mm 7
Next
Important Notice
Our weather forecast for Vientiane in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Vientiane forecast closer to your planned date for the most up-to-date weather information.
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Vientiane in May - FAQ

What are the expected maximum and minimum temperatures in Vientiane during May?
With daytime temperatures soaring above 35° and not dropping much below 25° at night, May in Vientiane is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in Vientiane during May?
Significant rainfall exceeding 190.7 mm is expected in Vientiane during May, occurring over more than 28 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Vientiane during May?
The average wind speed in Vientiane during May is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Vientiane

Explore the daily rainfall trends and prepare for Vientianes May weather 💧

UV exposure in Vientiane during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

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Location coordinates Where is Vientiane?

Get accurate weather forecasts for Vientiane, located at latitude 17.967 and longitude 102.6. Stay updated with localized weather information tailored for Vientiane.

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