Weather & Climate at Fort Buchanan Army Base

Guaynabo, PR

Summary of the weather and climate in Guaynabo, PR:

The average high is 87.6°F and the average low is 70.4°F.
The hottest month is August with a high of 90.3°F.
The coldest month is February with a low of 66.5°F.
Annual rainfall is 70.78 inches; the rainiest month is November (8.06 in).

Source: NOAA climate normals.

Temperatures through the year

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Bars span each month's average low to average high (60°F – 100°F scale).

Monthly averages

Month	High (°F)	Low (°F)	Rain (in)	Snow (in)
January	84.3	66.8	4.79	0
February	84.7	66.5	3.19	0
March	86.1	67.2	3.52	0
April	86.9	68.8	5.8	0
May	88.3	71.5	7.17	0
June	89.9	72.9	4.54	0
July	89.6	73.3	6.7	0
August	90.3	73.6	6.44	0
September	90	73.1	7.39	0
October	89.3	72.5	6.79	0
November	86.7	70.6	8.06	0
December	84.8	68.3	6.39	0