Planning a trip to San Juan in April? You are in luck! The weather is generally good, with an average maximum temperature of +84°F and approximately 2 sunny days. Just be prepared for some rain, as there are usually around 23 rainy days and 94 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+84°F
Avg. max. temperature
+70°F
Min.
+91°F
Max.
94 mm
Total precipitation
74%
Avg. humidity
3 m/s
Avg. wind
2 ☀️
Sunny Days
5 ⛅️
Cloudy
23 🌦
Rainy
Our opinion: San Juan has good weather in April.
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Average temperature in San Juan in April
Here are the expected maximum, average and minimum temperatures in San Juan for April based on the historical data.
Last Year
Historical Data
Going from a maximum of +88°F during the day to a minimum of +70°F during the night, the temperature in April averages around +84°F.
The average maximum temperature goes up 30% by the end of the month, compared with the beginning of the month, from +82°F to +88°F.
Is San Juan warm or cold in April?
San Juan is typically warm in April.
Maximum temperatures go up compared to the previous month from +82°F to +84°F. The minimum temperature also goes up from +73°F to +73°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how April is compared to other months in San Juan:
Water temperature in San Juan in April
Water in San Juan in April is Warm. It varies from +78°F to +82°F, with an average of +80°F.This is almost similar to the air temperature, which averages +84°F.
In April, 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 April?
You can absolutely swim in San Juan in April, the water is warm (+80°F in average), similar to heated pools. Suitable for most people, including children and the elderly.
🦭
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
Bring your swimming suit, sunscreen and your favorite inflatable pink flamingo.
Climate in San Juan in April
San Juan weather looks like this, on average, in April and the surrounding months.
March
April
May
Avg. temperature
+82°F
+84°F
+86°F
Min. temperature
+68°F
+70°F
+46°F
Max. temperature
+91°F
+91°F
+91°F
Rainfall
49 mm
94 mm
146 mm
Wind
3 m/s
3 m/s
3 m/s
Avg. water temperature
+79°F
+80°F
+81°F
Humidity
73%
74%
77%
Air pressure
1015 HPa
1015 HPa
1015 HPa
Sunny days
3
2
1
Cloudy days
7
5
4
Rainy days
21
23
22
Snowy days
0
0
0
April weather is still as good as in March.It’s getting warmer as April arrives. The average maximum temperature goes up from +82°F to +84°F during the day.Prepare for more rain. Average rainfall goes from 49 mm to 94 mm.Humidity rises from 73% to 74%.The average wind speed doesn’t change much during April, staying around 3 m/s.The days becoming less sunny, going from 3 sunny days in March to 2 in April.
Next month (May) brings a further decline in the weather.
Wind speed in San Juan in April based on historical data.
Last Year
Historical Data
The average wind speed is 4 m/s getting up to 7 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 decreasing during April, going from 7 m/s to 4 m/s over the course of the month.
Rain
Amount of rainfall in mm during April in San Juan based on historical data.
Last Year
Historical Data
Typically, there is a 77% chance of rain on an average day in April, with total rainfall of approximately 236 mm. The maximum amount of rainfall per day is around 53 mm, which is considered heavy rain.April is a pretty wet month with over 23 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how April 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 April in San Juan?
This is the weather in San Juan in April 2023:
1 April
☁️
+83°F
2 April
☁️
+83°F
3 April
☀️
+83°F
4 April
☁️
+83°F
5 April
🌧️
+80°F
6 April
🌧️
+79°F
7 April
🌧️
+81°F
8 April
🌧️
+79°F
9 April
☀️
+84°F
10 April
☀️
+87°F
11 April
🌫️
+84°F
12 April
☁️
+88°F
13 April
☁️
+82°F
14 April
☁️
+83°F
15 April
☁️
+83°F
16 April
🌧️
+83°F
17 April
☁️
+82°F
18 April
☁️
+84°F
19 April
☁️
+85°F
20 April
☁️
+84°F
21 April
🌧️
+84°F
22 April
☁️
+85°F
23 April
☁️
+84°F
24 April
☀️
+83°F
25 April
☁️
+84°F
26 April
☀️
+85°F
27 April
☁️
+87°F
28 April
☁️
+85°F
29 April
☁️
+85°F
30 April
☁️
+87°F
In April 2023 San Juan had 5 sunny days, 18 cloudy days, and 6 rainy days. The average maximum temperature was +84°F, with an absolute maximum of +88°F and a minimum of +79°F. The average humidity was 81%, with a maximum of 100% and a minimum of 60%. The average wind speed was 4 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in April?
Climate Change Over the Years
This is how San Juan climate has changed over the last 43 years.
The climate in San Juan in April 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 April:
Is April a good time to visit San Juan?
April is a really good time to go to San Juan. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit San Juan.
Can you sunbathe in San Juan in April?
April is warm in San Juan. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.
Can you swim in San Juan in April?
Yes, you can swim in San Juan in April, the water temperature averaging at +80°F. This temperature is considered warm and comfortable for most swimmers.
Is San Juan rainy in April?
San Juan is often rainy in April. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in San Juan in April?
Usually, it’s not very sunny in San Juan in April, 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.
