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Weather in San Juan for May 2026

Your guide to San Juan weather in May - trends and predictions

    Temperatures

  • Until now, May 2026 in San Juan has been nearly identical to the historical average, with a temperature of 29.5 °C (showing only a slight deviation of -0.3 °C).

  • The forecast for the next days in San Juan predicts temperatures to be around 30 °C, close to the historical average.

  • In general, the average temperature in San Juan at the beginning of May is 29.7 °C. As the month progressed, temperatures tended to remain steady, reaching an average of 29.7 °C by the end of May.

    • Rain 🌧️

  • San Juan experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 171.5 mm.

Average dry days
2
Dry days
Average rainy days
29
Rainy days
Average snowy days
0
Snow days
Average temperatures
30°/24°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
79 %
Avg humidity

San Juan Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
29°
2
Patchy rain possible
30°
3
Partly cloudy
30°
4
Cloudy
30°
5
Patchy rain possible
30°
6
Cloudy
29°
7
Cloudy
30°
8
Patchy rain possible
29°
9
Patchy rain possible
29°
10
Cloudy
30°
11
Cloudy
31°
12
Patchy rain possible
30°
13
Patchy rain possible
31°
14
Patchy rain possible
31°
15
Patchy rain possible
31°
16
Patchy rain possible
29°
17
Patchy rain possible
30°
18
Patchy rain possible
30°
19
Patchy rain possible
30°
20
Patchy rain possible
29°
21
Patchy rain possible
30°
22
Patchy rain possible
26°
23
Patchy rain possible
29°
24
Patchy rain possible
29°
25
Patchy rain possible
29°
26
Patchy rain possible
29°
27
Patchy rain possible
30°
28
Overcast
29°
29
Cloudy
30°
30
Patchy rain possible
30°
31
Patchy rain possible
31°

Temperatures trend during May in San Juan

See the weather trend as well as the moving average line

May weather in San Juan day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Patchy rain possible
Patchy rain possible
 29° /23° 10.2 mm 7
2 May Patchy rain possible
Patchy rain possible
 30° /23° 8.1 mm 8
3 May Partly cloudy
Partly cloudy
 30° /23° 2.1 mm 8
4 May Cloudy
Cloudy
 30° /23° 4.3 mm 8
5 May Patchy rain possible
Patchy rain possible
 30° /23° 3.8 mm 8
6 May Cloudy
Cloudy
 29° /24° 4.3 mm 8
7 May Cloudy
Cloudy
 30° /23° 10.1 mm 8
8 May Patchy rain possible
Patchy rain possible
 29° /22° 11.8 mm 8
9 May Patchy rain possible
Patchy rain possible
 29° /23° 5.4 mm 8
10 May Cloudy
Cloudy
 30° /23° 3.1 mm 8
11 May Cloudy
Cloudy
 31° /23° 1.2 mm 8
12 May Patchy rain possible
Patchy rain possible
 30° /23° 1.5 mm 6
13 May Patchy rain possible
Patchy rain possible
 31° /24° 0.5 mm 12.5
14 May Patchy rain possible
Patchy rain possible
 31° /24° 0.7 mm 12.7
15 May Patchy rain possible
Patchy rain possible
 31° /24° 0.9 mm 1.7
16 May Patchy rain possible
Patchy rain possible
 29° /25° 0.7 mm 6
17 May Patchy rain possible
Patchy rain possible
 30° /25° 0.9 mm 6
18 May Patchy rain possible
Patchy rain possible
 30° /24° 0.9 mm 6
19 May Patchy rain possible
Patchy rain possible
 30° /24° 0.2 mm 6
20 May Patchy rain possible
Patchy rain possible
 29° /25° 0.2 mm 6
21 May Patchy rain possible
Patchy rain possible
 30° /25° 0.3 mm 6
22 May Patchy rain possible
Patchy rain possible
 26° /25° 2.9 mm 6
23 May Patchy rain possible
Patchy rain possible
 29° /24° 0.4 mm 6
24 May Patchy rain possible
Patchy rain possible
 29° /24° 1.4 mm 6
25 May Patchy rain possible
Patchy rain possible
 29° /24° 1 mm 6
26 May Patchy rain possible
Patchy rain possible
 29° /24° 3 mm 6
27 May Patchy rain possible
Patchy rain possible
 30° /24° 5.2 mm 6
28 May Overcast
Overcast
 29° /24° 2.3 mm 7
29 May Cloudy
Cloudy
 30° /24° 0.9 mm 7
30 May Patchy rain possible
Patchy rain possible
 30° /24° 1.8 mm 7
31 May Patchy rain possible
Patchy rain possible
 31° /25° 0.7 mm 7
Next
Important Notice
Our weather forecast for San Juan 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 San Juan forecast closer to your planned date for the most up-to-date weather information.
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San Juan in May - FAQ

What are the expected maximum and minimum temperatures in San Juan during May?

During May, expect a variety of temperatures with highs around 30° and lows near 24°, suitable for diverse activities and preferences.

How much rainfall should be expected in San Juan during May?

Significant rainfall exceeding 171.5 mm is expected in San Juan during May, occurring over more than 29 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in San Juan during May?

The average wind speed in San Juan during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in San Juan

Explore the daily rainfall trends and prepare for San Juans May weather 💧
Typically, San Juan has 29 rainy days in May with a total of 171.5 mm of rainfall.

UV exposure in San Juan during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Provinces in San Juan
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San Juan Antiguo BarrioSan Juan de la Maguana
Top locations in San Juan
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Punta Caña
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Location coordinates Where is San Juan?

Get accurate weather forecasts for San Juan, located at latitude 18.466 and longitude -66.106. Stay updated with localized weather information tailored for San Juan.

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