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San Juan in March: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in San Juan in March will be like? Take a look at our weather guide for San Juan, based on historical data.
Check flight prices to San Juan on Avionero:
March

Weather in San Juan in March 2025

Good Weather
Warm
☁️
Cloudy
Are you considering a trip to San Juan in March? Well, the weather is usually on your side with an average maximum temperature of +82°F and about 5 sunny days. Just keep in mind that there may be some rain, with an average of 5 rainy days and 50 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.
Good to know:
  • March is usually the driest month of the year in San Juan

Average weather

☀️
+82°F
Avg. max. temperature
+68°F
Min.
+91°F
Max.
50 mm
Total precipitation
73%
Avg. humidity
3 m/s
Avg. wind
5 ☀️
Sunny Days
21 ⛅️
Cloudy
5 🌦
Rainy
Our opinion: San Juan has good weather in March.

Average temperature in San Juan in March

Here are the expected maximum, average and minimum temperatures in San Juan for March based on the historical data.
Last Year
Historical Data

The expected average maximum temperature in March is +82°F with a maximum of +84°F and a minimum of +68°F.

The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +84°F to +84°F.

Is San Juan warm or cold in March?

San Juan is typically warm in March.

Maximum temperatures go up compared to the previous month from +82°F to +82°F. The minimum temperature also goes up from +72°F to +73°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

March is one of the coolest months in San Juan, here is the comparison with other months:

Climate in San Juan in March

San Juan weather looks like this, on average, in March and the surrounding months.
FebruaryMarchApril
Avg. temperature
+82°F+82°F+84°F
Min. temperature
+68°F+68°F+70°F
Max. temperature
+90°F+91°F+91°F
Rainfall
36 mm50 mm91 mm
Wind
2 m/s3 m/s2 m/s
Humidity
74%73%74%
Air pressure
1016 HPa1015 HPa1014 HPa
Sunny days
554
Cloudy days
192118
Rainy days
458
Snowy days
000

March weather is still as good as in February. The temperature levels stay the same in the area of +82°F for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 36 mm to 50 mm. It feels drier, as humidity decreases from 74% to 73%. Winds are stronger in comparison to February, going up from 2 m/s to 3 m/s on average. The amount of sunny days stay about the same, averaging 5 sunny days during the month.

April brings much the same weather, it remains good.

Wind

Wind speed in San Juan in March based on historical data.
Last Year
Historical Data

The average wind speed is 5 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 increasing during March, going from 3 m/s to 6 m/s over the course of the month.

Rain

Amount of rainfall in mm during March in San Juan based on historical data.
Last Year
Historical Data
Typically, there is a 61% chance of rain on an average day in March, with total rainfall of approximately 27 mm. The maximum amount of rainfall per day is around 4 mm, which is considered light rain. March 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 March is compared with other months in the amount of precipitation, total mm:
San Juan wettest month is September, where a typical day has a 53% chance of precipitation and 149 mm of rainfall per day. January, on the other hand, is the driest month with a mere 13% chance of precipitation and 35 mm of rainfall per day.

How was the weather last March in San Juan?

This is the weather in San Juan in March 2023:
1 March
☁️
+85°F
2 March
☁️
+85°F
3 March
☁️
+83°F
4 March
☁️
+84°F
5 March
🌧️
+81°F
6 March
☁️
+81°F
7 March
☁️
+83°F
8 March
☁️
+82°F
9 March
☁️
+82°F
10 March
☁️
+81°F
11 March
☁️
+83°F
12 March
☁️
+81°F
13 March
☀️
+84°F
14 March
☁️
+83°F
15 March
☁️
+83°F
16 March
☁️
+84°F
17 March
☁️
+84°F
18 March
☁️
+84°F
19 March
☁️
+83°F
20 March
☁️
+83°F
21 March
☁️
+81°F
22 March
☁️
+80°F
23 March
☁️
+83°F
24 March
☁️
+79°F
25 March
☁️
+83°F
26 March
☁️
+83°F
27 March
☀️
+85°F
28 March
☁️
+83°F
29 March
☁️
+84°F
30 March
☁️
+84°F
31 March
☁️
+83°F
In March 2023 San Juan had 2 sunny days, 28 cloudy days, and 1 rainy days. The average maximum temperature was +82°F, with an absolute maximum of +84°F and a minimum of +79°F. The average humidity was 81%, with a maximum of 97% and a minimum of 56%. The average wind speed was 5 m/s, with a maximum of 11 m/s and a minimum of 0 m/s.
Are you planning a trip in March?

Climate Change Over the Years

This is how San Juan climate has changed over the last 43 years.

The climate in San Juan in March has not changed that much over the last 43 years.

The average temperature was the lowest in 2017 (+83°F) and the highest in 1983 (+92°F). The driest year was 2000 with only 14 mm of rainfall, and the wettest year was 2017 with 134 mm.

FAQ

Frequently asked questions about the weather in San Juan in March:

Is March a good time to visit San Juan?

March 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 March?

March 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.

Is San Juan rainy in March?

San Juan is often rainy in March. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in San Juan in March?

Usually, it’s not very sunny in San Juan in March, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Monthly weather in San Juan

Source of the data

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, 2022.

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.