Weather Guaynabo long-term weather forecast

Long-term weather forecast for Guaynabo for ten days.

Thursday, Sep 11

91 / 77°F

0.00 in

7 mph

79 °F	88 °F	2 am
81 °F	90 °F	8 am
91 °F	99 °F	2 pm
82 °F	91 °F	8 pm

sunrise 6:11 am
sunset 6:30 pm

HOURLY

During the day morning clear, later morning cloudy, in the afternoon initially cloudy, later overcast. The highest temperature 91 °F. Total rainfall 0.02 in. At night cloudy. The lowest temperature 77 °F.

Interactive map weather Commonwealth of Puerto Rico

GPS: 18.3575; -66.1110

altitude: 164 ft
local time:

PLACES IN THE AREA

Weather forecast Guaynabo, Puerto Rico extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Thursday 09/11/2025
2 AM	clear	79 °F 88 °F	0.0 in	7 fps 5 mph south-southeast	29.9 in	89 %	73 °F	10 %	0%	3%	8%	0%
8 AM	cloudy	81 °F 90 °F	0.01 in	7 fps 5 mph southeast	30.0 in	82 %	73 °F	41 %	0%	14%	16%	27%
2 PM	overcast	91 °F 99 °F	0.01 in	11 fps 7 mph east	29.9 in	55 %	72 °F	100 %	0%	7%	9%	100%
8 PM	overcast	82 °F 91 °F	0.0 in	9 fps 6 mph southeast	29.9 in	76 %	73 °F	100 %	0%	2%	3%	100%
Friday 09/12/2025
2 AM	cloudy	79 °F 88 °F	0.0 in	6 fps 4 mph south-southeast	29.9 in	87 %	73 °F	42 %	0%	4%	5%	37%
8 AM	clear	82 °F 91 °F	0.0 in	7 fps 5 mph southeast	30.0 in	78 %	73 °F	1 %	0%	0%	0%	0%
2 PM	partly cloudy	91 °F 99 °F	0.00 in	12 fps 8 mph east-northeast	29.9 in	52 %	72 °F	13 %	0%	9%	6%	0%
8 PM	overcast	84 °F 93 °F	0.0 in	5 fps 4 mph south-southeast	29.9 in	71 %	73 °F	86 %	0%	8%	0%	85%

Guaynabo, Puerto Rico - information

State: Puerto Rico

GPS coordinates: 18.3575; -66.1110

Time zone: America / Puerto Rico time difference in hours with time in NY is -6 hours

Population: 81 360
Altitude: 164 ft
The administrative part:

Guaynabo Municipio, Guaynabo
Guaynabo Barrio-Pueblo, Guaynabo

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Weather Guaynabo, Puerto Rico. Weather forecast Guaynabo.

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Data source

Weather forecast for Guaynabo is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Guaynabo

data are always in the local time

Sun and light

Sept. 11, 2025

Sunrise:	Sunset:
6:11 am	6:30 pm
Noon:	Length of day:
12:20 pm	12:18
Start of civil twilight*:	End of civil twilight*:
5:49 am	6:52 pm
Start of nautical twilight*:	End of nautical twilight*:
5:24 am	7:17 pm
Start of astronomical twilight*:	End of astronomical twilight*:
4:58 am	7:42 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
09/10/2025 8:39 pm	09/11/2025 9:55 am
Next new moon:	Next full moon:
09/21/2025	10/06/2025