Port Royal weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Excellent
Best time to visit: June – July, November – April
What is the weather like in Port Royal in August?
In August, Port Royal is hot: daytime highs average 30 °C, and even at night it stays warm at around 26 °C. The sea averages 29.2 °C – almost as warm as a bath. The sun shines for around 8 hours a day. It is the rainy season: rain falls on about 15 days, totalling 92 mm. On about 19 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is an excellent month for a holiday in Port Royal.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 89 | 81 | 75 |
| Day | 30° | 30° | 30° |
| Night | 26° | 26° | 26° |
| Sea | 29° | 29° | 30° |
| Sun | 8 h | 8 h | 8 h |
| Rain days | 10 | 15 | 19 |
More details for August
- Daylight
- 12 h 45 min05:50 – 18:35
- UV index
- 13 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 19 days30 °C or moreAll months
- Time zone
- UTC−5America/Jamaica
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %85 %
- Few rainy daysweight 20 %21 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Port Royal in August: quick answers
Is Port Royal hot in August?
Yes. In August, Port Royal is hot: daytime highs average 30 °C and nights stay around 26 °C. On about 19 days the thermometer climbs to 30 °C or more.
Can you swim in Port Royal in August?
Yes. In August the sea averages 29.2 °C – almost as warm as a bath.
Does it rain much in Port Royal in August?
It rains often – on about 15 days, adding up to 92 mm.
Port Royal month by month
The whole year in Port RoyalAll destinations: JamaicaCaribbean weather in AugustWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences