Guaynabo in August
6.0out of 10
Possible, with caveats
Warm and comfortable: highs around 30°C. Very wet: about 24 rainy days.
30°CAvg high
25°CAvg low
24Rainy days (126 mm)
12:37 hDaylight
06:10Sunrise · 18:47 Sunset
Why this score
- Warm and comfortable: highs around 30°C
- Very wet: about 24 rainy days
What to wear and pack
- T-shirts and light layers
- Shorts or a light skirt
- Rain jacket or compact umbrella
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rain in August varies a lot between years (±3.1 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 26°C | 21°C | 49 mm | 16 | – | – | 7.0 |
| February | 27°C | 21°C | 39 mm | 13 | – | – | 7.3 |
| March | 27°C | 21°C | 55 mm | 15 | – | – | 7.1 |
| April | 28°C | 22°C | 86 mm | 18 | – | – | 6.7 |
| May | 28°C | 23°C | 142 mm | 22 | – | – | 6.1 |
| June | 29°C | 24°C | 98 mm | 21 | – | – | 6.1 |
| July | 29°C | 24°C | 110 mm | 22 | – | – | 6.0 |
| August | 30°C | 25°C | 126 mm | 24 | – | – | 6.0 |
| September | 29°C | 24°C | 168 mm | 25 | – | – | 6.0 |
| October | 29°C | 24°C | 156 mm | 25 | – | – | 6.1 |
| November | 28°C | 23°C | 124 mm | 22 | – | – | 6.1 |
| December | 27°C | 22°C | 58 mm | 17 | – | – | 6.9 |
Frequently asked questions
How hot is Guaynabo in August?
Daytime highs average 30°C and nights about 25°C.
When is the best time to visit Guaynabo?
The best months are February, March, January, December.