The weather in July in San Juan

It's hot in July in San Juan with an average temperature of 32°C. Temperatures this month range from a low of 31°C to a high of 32°C. At night, you can expect temperatures between 26°C and 27°C.

Looking for sun? July isn’t a good month to be in San Juan. The temperature is nice, but there’s too much chance of rain.

Average temperatures and precipitation

This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in July for San Juan, Puerto Rico. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.

Temperature records

With 34°C in 2023, San Juan reached the highest temperature in July over the past 10 years. The lowest daytime temperature in this month was 27°C in 2015. The extreme nighttime temperatures ranged from a lowest recorded value of 23°C to a highest value of 28°C.

Water temperature

The water temperature at San Juan is 29°C this month. Nice and warm for a swim.

Rainfall amount

In July, there is an average of 141 mm of precipitation, spread over 16 days. The wind speed is around 4 Bft, mostly coming from the East.

Daily weather in July for San Juan

Click on any day in July to get detailed info about the usual weather on that day in San Juan. Check out the historical temperatures and precipitation over the past 10 years on this day.

1

32° / 27°

2

32° / 26°

3

32° / 27°

4

32° / 27°

5

32° / 27°

6

32° / 27°

7

32° / 26°

8

32° / 26°

9

31° / 26°

10

32° / 26°

11

32° / 27°

12

31° / 26°

13

32° / 26°

14

32° / 27°

15

32° / 26°

16

32° / 27°

17

32° / 26°

18

32° / 26°

19

32° / 27°

20

32° / 27°

21

32° / 27°

22

32° / 26°

23

32° / 27°

24

32° / 27°

25

32° / 26°

26

32° / 27°

27

32° / 27°

28

32° / 27°

29

32° / 26°

30

32° / 26°

31

32° / 26°

Start of July

The month of July starts in San Juan with hot temps, averaging around 32°C during the day and nights around 27°C.

Mid July

By mid-July, daytime temps stay steady at around 32°C, with nights around 27°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.

End of July

By the end of July, the average daytime temperature in San Juan is around 32°C, while nighttime temps are about 27°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.

Find affordable trips to San Juan

UV index

The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.

The hurricane season in San Juan runs from June to November.

Check out the climate of San Juan for all months and discover the best travel time

Temperature charts

These charts show the average temperatures in July in San Juan, Puerto Rico. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.

Daily Temperature in July in San Juan

Temperature in July in San Juan over the years

Precipitation charts

These charts show the average amount of precipitation in July in San Juan, Puerto Rico. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.

Daily Precipitation in July in San Juan

Total precipitation in July in San Juan over the years

Daily UV index in July in San Juan

This chart shows the average daily UV index in July in San Juan, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.

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Average weather in San Juan by month

Click on a month below to see detailed weather info for San Juan. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.