If you plan to visit San Juan in July, the weather is typically alright, with an average high temperature of +88°F during the day and approximately 1 sunny days. Expect some rainy, though, as there are typically 21 rainy days in the month and around 84 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+88°F
Avg. max. temperature
+73°F
Min.
+95°F
Max.
84 mm
Total precipitation
78%
Avg. humidity
3 m/s
Avg. wind
1 ☀️
Sunny Days
5 ⛅️
Cloudy
21 🌦
Rainy
Our opinion: San Juan has OK weather in July.
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Average temperature in San Juan in July
Here are the expected maximum, average and minimum temperatures in San Juan for July based on the historical data.
Last Year
Historical Data
Going from a maximum of +93°F during the day to a minimum of +75°F during the night, the temperature in July averages around +88°F.
The average maximum temperature goes down 20% by the end of the month, compared with the beginning of the month, from +91°F to +88°F.
Is San Juan warm or cold in July?
San Juan is typically hot in July.
Maximum temperatures go up compared to the previous month from +88°F to +88°F. The minimum temperature also goes up from +77°F to +79°F.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
July is one of the warmest months in San Juan, here is the comparison with other months:
Water temperature in San Juan in July
Water in San Juan in July is Very warm. It varies from +81°F to +85°F, with an average of +83°F.This is almost similar to the air temperature, which averages +88°F.
In July, water temperatures are average relative to the rest of the year:
The warmest water temperatures in San Juan are reached in September, when the average sea temperature rises to +85°F. The coldest water temperatures are in February, with an average of +79°F.
Can you swim in San Juan in July?
You can definitely swim in San Juan in July, the water is very warm (+83°F in average), and might even be unpleasant for ones who like it more fresh.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Don't forget sunscreen and a hat, it's going to be hot!
Climate in San Juan in July
San Juan weather looks like this, on average, in July and the surrounding months.
June
July
August
Avg. temperature
+88°F
+88°F
+88°F
Min. temperature
+72°F
+73°F
+73°F
Max. temperature
+95°F
+95°F
+95°F
Rainfall
79 mm
84 mm
106 mm
Wind
3 m/s
3 m/s
3 m/s
Avg. water temperature
+83°F
+83°F
+84°F
Humidity
77%
78%
78%
Air pressure
1016 HPa
1016 HPa
1015 HPa
Sunny days
2
1
1
Cloudy days
5
5
3
Rainy days
20
21
22
Snowy days
0
0
0
July weather is still as ok as in June.The temperature levels stay the same in the area of +88°F for average maximum temperature during the day.Prepare for more rain. Average rainfall goes from 79 mm to 84 mm.Humidity rises from 77% to 78%.The average wind speed doesn’t change much during July, staying around 3 m/s.The days becoming less sunny, going from 2 sunny days in June to 1 in July.
August brings much the same weather, it remains ok.
Wind speed in San Juan in July based on historical data.
Last Year
Historical Data
The average wind speed is 5 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in San Juan is gradually increasing during July, going from 4 m/s to 5 m/s over the course of the month.
Rain
Amount of rainfall in mm during July in San Juan based on historical data.
Last Year
Historical Data
Typically, there is a 61% chance of rain on an average day in July, with total rainfall of approximately 265 mm. The maximum amount of rainfall per day is around 51 mm, which is considered heavy rain.July is a pretty wet month with over 19 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how July is compared with other months in the amount of precipitation, total mm:
San Juan wettest month is October, where a typical day has a 68% chance of precipitation and 151 mm of rainfall per day. January, on the other hand, is the driest month with a mere 68% chance of precipitation and 38 mm of rainfall per day.
How was the weather last July in San Juan?
This is the weather in San Juan in July 2023:
1 July
🌫️
+92°F
2 July
🌫️
+93°F
3 July
🌫️
+89°F
4 July
🌫️
+86°F
5 July
🌫️
+87°F
6 July
🌫️
+89°F
7 July
🌫️
+88°F
8 July
🌧️
+86°F
9 July
🌧️
+88°F
10 July
🌫️
+89°F
11 July
🌫️
+88°F
12 July
🌧️
+86°F
13 July
🌫️
+89°F
14 July
🌫️
+88°F
15 July
🌧️
+88°F
16 July
🌧️
+88°F
17 July
🌧️
+86°F
18 July
🌫️
+88°F
19 July
🌫️
+88°F
20 July
🌫️
+88°F
21 July
🌫️
+89°F
22 July
🌫️
+92°F
23 July
☁️
+93°F
24 July
☁️
+88°F
25 July
☁️
+87°F
26 July
🌫️
+89°F
27 July
🌧️
+88°F
28 July
☁️
+88°F
29 July
🌫️
+89°F
30 July
🌫️
+89°F
31 July
🌫️
+88°F
In July 2023 San Juan had 0 sunny days, 4 cloudy days, and 7 rainy days. The average maximum temperature was +88°F, with an absolute maximum of +93°F and a minimum of +86°F. The average humidity was 82%, with a maximum of 100% and a minimum of 64%. The average wind speed was 5 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in July?
Climate Change Over the Years
This is how San Juan climate has changed over the last 43 years.
The climate in San Juan in July has not changed that much over the last 43 years.
The average temperature was the lowest in 2008 (+84°F) and the highest in 2013 (+87°F). The driest year was 1994 with only 675 mm of rainfall, and the wettest year was 2023 with 2338 mm.
FAQ
Frequently asked questions about the weather in San Juan in July:
Is July a good time to visit San Juan?
It’s always a good time to visit San Juan, but the weather is changeable in July, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in San Juan in July?
Absolutely, July is hot in San Juan. Plan on beach and pool time, and ensure that you pack light and breathable options to stay comfortable.
Can you swim in San Juan in July?
Yes, you can swim in San Juan in July, the water is very warm, with temperature averaging at +83°F, but it's important to manage hydration and sun exposure.
Is San Juan rainy in July?
San Juan is often rainy in July. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in San Juan in July?
Usually, it’s not very sunny in San Juan in July, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in San Juan, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
