Guaynabo Weather Forecast
- 75
- 88
Rain Showers
- 75
- 88
Rain Showers
- 75
- 88
Rain Showers
- 76
- 89
Rain Showers
- 75
- 88
Rain Showers
- 75
- 88
Rain Showers
Today 23 May San Juan and Vicinity
Mostly Cloudy, then becoming variably cloudy late this Morning, then becoming partly Cloudy, then becoming mostly cloudy late. Scattered Showers. Isolated Thunderstorms this afternoon. Highs around 90. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.
Tonight 23 May San Juan and Vicinity
Partly cloudy with isolated Showers. Lows around 82. East Winds 10 to 15 Mph. Chance of rain 20 percent.
Guaynabo Temperature Statistics
May Temperature
San Juan Fernando Luis Ribas Dominicci (6.8 miles)
Lowest 1 May, 2025
75.2 °FAverage May
81.6 °FHighest 9 May, 2025
87.8 °F
Climate (2020–Present)
San Juan Fernando Luis Ribas Dominicci (6.8 miles)
Average Low 2020–2025
77.7 °FAverage 2020–2025
82.5 °FAverage High 2020–2025
85.2 °F