March Weather in Puerto Rico: Temperature, Rain Averages

The tables below give the normal March temperatures and rainfall for cities and popular vacation spots in Puerto Rico. There's also information here on this month's average humidity and ocean temperature at San Juan.

The temperature and rain measurements are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

One site, Pico Del Este, is much cooler than others on the list. That's because it's a high mountain peak, at 3448 feet (1050 metres) elevation, in the El Yunque Caribbean National Forest.

Temperature

Average March temperatures in Puerto Rico
High °F	Low °F	Place	High °C	Low °C
84	67	Aguirre	29	20
76	62	Aibonito	24	17
86	63	Caguas	30	17
84	72	Ceiba	29	22
82	68	Dorado	28	20
86	72	Guayama	30	22
83	67	Isabela	28	20
84	65	Juncos	29	19
86	70	La Parguera	30	21
87	63	Lajas	31	17
84	70	Levittown	29	21
83	66	Manati	28	19
76	62	Maricao	24	16
87	68	Mayagüez	30	20
86	69	Mona Island	30	20
67	59	Pico Del Este	19	15
88	63	Ponce	31	17
85	72	San Juan	29	22

Ocean Temperature at San Juan, Puerto Rico averages 78 degrees Fahrenheit (26 degrees Celsius) in March.

Rainfall

Average total precipitation in March. Days are when it rains at least 0.01 inches (0.25 millimetres).
Days	Place	Inches	Millimetres
6	Aguirre	1.4	35
12	Aibonito	3.5	89
14	Caguas	3.9	99
14	Ceiba	1.8	47
9	Dorado	2.4	61
12	Guayama	1.9	48
11	Isabela	3.9	98
12	Juncos	2.9	73
–	La Parguera	2.7	69
8	Lajas	2.5	64
–	Levittown	3.5	88
10	Manati	4.1	103
–	Maricao	4.0	101
8	Mayagüez	2.1	53
9	Mona Island	2.2	55
7	Ponce	1.9	47
13	San Juan	2.2	55

Relative Humidity at San Juan, Puerto Rico in March averages 77 percent in the morning and 61 percent in the afternoon.

March Weather in Puerto Rico

Temperature

Rainfall

References

More Caribbean Weather Information