April Weather in Puerto Rico

The tables below give the normal April 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 April temperatures in Puerto Rico

High °F	Low °F	Place	High °C	Low °C
85	69	Aguirre	30	21
78	63	Aibonito	26	17
88	66	Caguas	31	19
86	73	Ceiba	30	23
84	70	Dorado	29	21
87	74	Guayama	31	23
83	69	Isabela	29	20
85	68	Juncos	30	20
87	72	La Parguera	30	22
88	66	Lajas	31	19
86	72	Levittown	30	22
84	68	Manati	29	20
77	63	Maricao	25	17
87	69	Mayagüez	31	21
89	69	Mona Island	31	21
68	60	Pico Del Este	20	15
89	65	Ponce	32	18
86	74	San Juan	30	23

Ocean Temperature at San Juan, Puerto Rico averages 80 degrees Fahrenheit (27 degrees Celsius) in April.

Rainfall

Average total precipitation in April. Days are when it rains at least 0.01 inches (0.25 millimetres).

Days	Place	Inches	Milli­metres
7	Aguirre	1.5	38
12	Aibonito	4.4	113
15	Caguas	4.2	107
13	Ceiba	3.0	76
12	Dorado	3.9	100
13	Guayama	2.8	72
12	Isabela	4.9	125
13	Juncos	4.8	121
–	La Parguera	3.6	91
10	Lajas	3.3	83
–	Levittown	5.6	143
12	Manati	4.9	125
–	Maricao	7.9	202
11	Mayagüez	3.9	99
8	Mona Island	2.4	62
9	Ponce	2.3	57
14	San Juan	4.6	117

Relative Humidity at San Juan, Puerto Rico in April averages 75 percent in the morning and 62 percent in the afternoon.