As of 21:15 AST

Guayanilla, PR weather in December

80°

Guayanilla, Saturday, 8 August, 21:15

Clear. Feels like 86°. High 89°, low 76°.

Pressure30.00 inHg

Wind5.4 mph NE

Humidity88%

Visibility6.2 mi

Dew point76°

See detailed hourly forecast

In December, Guayanilla, PR averages a high of 83.2° and a low of 72.2°. About 1.0 inches of precipitation fall over the month (7 wet days). The record high is 89.4° (2021) and the record low 59° (2025). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	83.5°	72.9°	25%	89.1° (2024)	66.7° (2001)
2	83.5°	72.9°	37%	87.8° (2024)	66° (2025)
3	83.1°	72.9°	25%	88° (2009)	66.7° (1996)
4	83.1°	72.5°	27%	87.8° (2025)	66° (2010)
5	83.1°	72.9°	33%	87.1° (1962)	66.7° (2010)
6	83.3°	72.7°	23%	89.1° (2024)	68.2° (1996)
7	83.3°	72.7°	27%	88.7° (2024)	65.7° (1960)
8	83.5°	72.7°	20%	88.5° (2024)	66.9° (2022)
9	83.5°	72.7°	20%	88° (2023)	66.7° (2022)
10	83.1°	72.7°	22%	87.6° (2024)	65.3° (2022)
11	83.5°	72.7°	23%	89.4° (2021)	66° (1969)
12	83.5°	72.3°	23%	87.6° (1995)	65.8° (2022)
13	83.3°	72.3°	20%	87.6° (1989)	68° (1996)
14	83.3°	72.3°	18%	86.5° (1989)	66.9° (1969)
15	83.1°	72.1°	27%	86.9° (2009)	66.6° (1966)
16	82.9°	72.3°	22%	87.4° (2024)	66.7° (1964)
17	83.3°	72.3°	13%	88.2° (2024)	65.3° (1996)
18	83.3°	72.1°	13%	87.1° (2006)	64° (1996)
19	83.1°	72.1°	17%	87.1° (1997)	65.8° (1984)
20	83.3°	72°	20%	88° (1997)	65.5° (2025)
21	83.1°	72.1°	13%	86.7° (2015)	67.3° (1979)
22	83.3°	72.1°	18%	87.3° (2009)	64.8° (1979)
23	83.1°	72.1°	18%	87.4° (2015)	65.8° (2025)
24	82.9°	72°	25%	87.3° (1997)	65.3° (2010)
25	82.9°	72°	23%	87.6° (2015)	65.5° (2023)
26	82.9°	71.8°	20%	87.4° (2015)	63° (1979)
27	83.1°	71.6°	18%	86.5° (2006)	63° (2025)
28	82.9°	71.4°	12%	86.7° (1995)	60.4° (2025)
29	82.9°	71.2°	20%	87.1° (1995)	59° (2025)
30	82.9°	71.2°	27%	87.3° (2021)	63.1° (2024)
31	83.1°	71.6°	10%	88° (2021)	65.1° (1975)