Port Royal weather in March
In March, Port Royal sees average daytime highs of 26°C and overnight lows near 22°C, with 33 mm of rain across 7.9 wet days and about 11.9 hours of daylight. It is the 10th-warmest and 10th-wettest month of the year here.
Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 68% of the time in March, and the air most often feels muggy.
Daylight stretches from about 11 h 36 min at the start of March to 12 h 06 min by month's end. Set against the rest of the year, March is Port Royal's 2nd-clearest and 7th-windiest month. For the whole year in context, see Port Royal's year-round climate.
- Daytime high
- 26°
- 10th warmest
- Overnight low
- 22°
- 3rd coldest
- Rainfall
- 33 mm
- 7.9 wet days
- Daylight
- 11 h 54 min
- 6:21 AM – 6:13 PM
- Cloud cover
- 36%
- 2nd clearest
- Wind
- 12 km/h
- 7th windiest
- Solar energy
- 6.14 kWh/m²
- Travel score
- 7.3
- out of 10
Port Royal is settlement in Jamaica.
- Founded
- 1494
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in March
Day-to-day highs hold fairly steady near 26°C through the month.
A typical March day in Port Royal reaches about 26°C in the afternoon and slips back to 22°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 27°C. Set against its neighbours, March runs on par with February and about 1°C cooler than April.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg low (°C) | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 26 | 22 |
| 2 | 26 | 22 |
| 3 | 26 | 22 |
| 4 | 26 | 22 |
| 5 | 26 | 22 |
| 6 | 26 | 22 |
| 7 | 26 | 22 |
| 8 | 26 | 22 |
| 9 | 26 | 22 |
| 10 | 26 | 22 |
| 11 | 26 | 22 |
| 12 | 26 | 22 |
| 13 | 26 | 22 |
| 14 | 26 | 22 |
| 15 | 26 | 22 |
| 16 | 26 | 22 |
| 17 | 26 | 22 |
| 18 | 26 | 22 |
| 19 | 26 | 22 |
| 20 | 27 | 22 |
| 21 | 27 | 22 |
| 22 | 27 | 22 |
| 23 | 27 | 22 |
| 24 | 27 | 22 |
| 25 | 27 | 22 |
| 26 | 27 | 22 |
| 27 | 27 | 22 |
| 28 | 27 | 22 |
| 29 | 27 | 22 |
| 30 | 27 | 22 |
| 31 | 27 | 23 |
How March really feels in Port Royal
Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
March sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Port Royal weather by month
How March compares with the rest of the year at a glance. March is the 10th-warmest and 10th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 26° / 22° | 27 | 7.9 | 11 | 7.4 |
| Feb | 26° / 22° | 21 | 7.1 | 11.4 | 7.5 |
| Mar | 26° / 22° | 33 | 7.9 | 11.9 | 7.3 |
| Apr | 27° / 23° | 35 | 9 | 12.4 | 6.9 |
| May | 28° / 24° | 95 | 14.1 | 12.8 | 5.8 |
| Jun | 29° / 25° | 75 | 11.6 | 13.1 | 5.4 |
| Jul | 29° / 25° | 56 | 10.5 | 13 | 5.4 |
| Aug | 29° / 25° | 85 | 14 | 12.6 | 4.9 |
| Sep | 29° / 25° | 128 | 18.3 | 12.1 | 4.4 |
| Oct | 28° / 24° | 153 | 21.7 | 11.6 | 4.4 |
| Nov | 27° / 24° | 81 | 13.3 | 11.2 | 6.0 |
| Dec | 27° / 23° | 43 | 9.6 | 10.9 | 6.9 |
Cloud cover in March
The sky is clear or mostly clear about 68% of the time in March.
Beyond those clear spells, partly cloudy skies cover about 23% of March, with mostly cloudy or overcast conditions the remaining 10%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 91 | 90 | 90 | 90 | 90 | 90 | 90 | 89 | 89 | 89 | 89 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 92 | 92 | 91 | 91 | 91 | 90 | 90 |
| Cloudier (%) | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 8 | 8 | 9 | 9 | 9 | 10 | 10 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 91 | 9 |
| 2 | 90 | 10 |
| 3 | 90 | 10 |
| 4 | 90 | 10 |
| 5 | 90 | 10 |
| 6 | 90 | 10 |
| 7 | 90 | 10 |
| 8 | 89 | 11 |
| 9 | 89 | 11 |
| 10 | 89 | 11 |
| 11 | 89 | 11 |
| 12 | 90 | 10 |
| 13 | 90 | 10 |
| 14 | 90 | 10 |
| 15 | 90 | 10 |
| 16 | 90 | 10 |
| 17 | 90 | 10 |
| 18 | 90 | 10 |
| 19 | 90 | 10 |
| 20 | 90 | 10 |
| 21 | 90 | 10 |
| 22 | 90 | 10 |
| 23 | 90 | 10 |
| 24 | 90 | 10 |
| 25 | 92 | 8 |
| 26 | 92 | 8 |
| 27 | 91 | 9 |
| 28 | 91 | 9 |
| 29 | 91 | 9 |
| 30 | 90 | 10 |
| 31 | 90 | 10 |
Chance of precipitation in March
Port Royal gets around 33 mm of rain over 7.9 wet days in March. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 26% and peaks near 29% on the wettest days. The odds climb toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 22 | 21 | 21 | 21 | 21 | 21 | 22 | 23 | 23 | 24 | 25 | 26 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 27 |
| Rain chance (%) | |
|---|---|
| 1 | 22 |
| 2 | 21 |
| 3 | 21 |
| 4 | 21 |
| 5 | 21 |
| 6 | 21 |
| 7 | 22 |
| 8 | 23 |
| 9 | 23 |
| 10 | 24 |
| 11 | 25 |
| 12 | 26 |
| 13 | 27 |
| 14 | 27 |
| 15 | 28 |
| 16 | 28 |
| 17 | 28 |
| 18 | 29 |
| 19 | 29 |
| 20 | 29 |
| 21 | 29 |
| 22 | 29 |
| 23 | 29 |
| 24 | 29 |
| 25 | 29 |
| 26 | 28 |
| 27 | 28 |
| 28 | 28 |
| 29 | 28 |
| 30 | 28 |
| 31 | 27 |
Humidity in March
Most of March feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, March lands in the muggy band about 73% of days. Sticky, muggy-or-worse air turns up on roughly 93% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | 8 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 |
| Muggy (%) | 80 | 79 | 79 | 78 | 77 | 77 | 76 | 76 | 75 | 76 | 75 | 75 | 74 | 75 | 74 | 74 | 74 | 75 | 74 | 74 | 73 | 72 | 71 | 71 | 70 | 69 | 68 | 67 | 65 | 64 | 64 |
| Oppressive (%) | 11 | 11 | 11 | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 15 | 16 | 17 | 17 | 18 | 19 | 20 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 32 | 33 | 34 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|
| 1 | 1 | 8 | 80 | 11 |
| 2 | 1 | 9 | 79 | 11 |
| 3 | 1 | 9 | 79 | 11 |
| 4 | 1 | 10 | 78 | 11 |
| 5 | 1 | 10 | 77 | 12 |
| 6 | 1 | 10 | 77 | 12 |
| 7 | 1 | 10 | 76 | 13 |
| 8 | 1 | 10 | 76 | 13 |
| 9 | 1 | 10 | 75 | 14 |
| 10 | 1 | 9 | 76 | 14 |
| 11 | 1 | 9 | 75 | 15 |
| 12 | 1 | 8 | 75 | 16 |
| 13 | 1 | 8 | 74 | 17 |
| 14 | 1 | 7 | 75 | 17 |
| 15 | 1 | 7 | 74 | 18 |
| 16 | 1 | 6 | 74 | 19 |
| 17 | 0 | 6 | 74 | 20 |
| 18 | 0 | 5 | 75 | 20 |
| 19 | 0 | 5 | 74 | 21 |
| 20 | 0 | 4 | 74 | 22 |
| 21 | 0 | 4 | 73 | 23 |
| 22 | 0 | 4 | 72 | 24 |
| 23 | 0 | 4 | 71 | 25 |
| 24 | 0 | 3 | 71 | 26 |
| 25 | 0 | 3 | 70 | 27 |
| 26 | 0 | 3 | 69 | 28 |
| 27 | 0 | 3 | 68 | 29 |
| 28 | 0 | 3 | 67 | 30 |
| 29 | 0 | 3 | 65 | 32 |
| 30 | 0 | 3 | 64 | 33 |
| 31 | 0 | 2 | 64 | 34 |
Wind in March
Winds average 12 km/h in March.
Across March, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 13 | light breeze |
| 2 | 13 | light breeze |
| 3 | 12 | light breeze |
| 4 | 12 | light breeze |
| 5 | 12 | light breeze |
| 6 | 12 | light breeze |
| 7 | 12 | light breeze |
| 8 | 12 | light breeze |
| 9 | 12 | light breeze |
| 10 | 12 | light breeze |
| 11 | 12 | light breeze |
| 12 | 12 | light breeze |
| 13 | 12 | light breeze |
| 14 | 12 | light breeze |
| 15 | 12 | light breeze |
| 16 | 12 | calm |
| 17 | 12 | calm |
| 18 | 12 | calm |
| 19 | 12 | calm |
| 20 | 12 | calm |
| 21 | 12 | calm |
| 22 | 12 | calm |
| 23 | 12 | calm |
| 24 | 12 | calm |
| 25 | 12 | calm |
| 26 | 12 | calm |
| 27 | 12 | calm |
| 28 | 12 | calm |
| 29 | 12 | calm |
| 30 | 12 | calm |
| 31 | 12 | calm |
Sunrise & sunset in March
Daylight runs from about 11 h 36 min at the start of March to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 30 minutes over March. Sunrise moves from 6:32 AM to 6:08 AM, and sunset from 6:09 PM to 6:16 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 |
| Sunrise (AM) | 6:32 | 6:31 | 6:31 | 6:30 | 6:29 | 6:29 | 6:28 | 6:27 | 6:26 | 6:26 | 6:25 | 6:24 | 6:23 | 6:22 | 6:22 | 6:21 | 6:20 | 6:19 | 6:18 | 6:18 | 6:17 | 6:16 | 6:15 | 6:14 | 6:13 | 6:13 | 6:12 | 6:11 | 6:10 | 6:09 | 6:08 |
| Sunset (PM) | 6:09 | 6:09 | 6:10 | 6:10 | 6:10 | 6:11 | 6:11 | 6:11 | 6:12 | 6:12 | 6:12 | 6:12 | 6:13 | 6:13 | 6:13 | 6:13 | 6:13 | 6:14 | 6:14 | 6:14 | 6:14 | 6:15 | 6:15 | 6:15 | 6:15 | 6:15 | 6:16 | 6:16 | 6:16 | 6:16 | 6:16 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.6 | 6:32 | 6:09 |
| 2 | 11.6 | 6:31 | 6:09 |
| 3 | 11.7 | 6:31 | 6:10 |
| 4 | 11.7 | 6:30 | 6:10 |
| 5 | 11.7 | 6:29 | 6:10 |
| 6 | 11.7 | 6:29 | 6:11 |
| 7 | 11.7 | 6:28 | 6:11 |
| 8 | 11.7 | 6:27 | 6:11 |
| 9 | 11.8 | 6:26 | 6:12 |
| 10 | 11.8 | 6:26 | 6:12 |
| 11 | 11.8 | 6:25 | 6:12 |
| 12 | 11.8 | 6:24 | 6:12 |
| 13 | 11.8 | 6:23 | 6:13 |
| 14 | 11.8 | 6:22 | 6:13 |
| 15 | 11.9 | 6:22 | 6:13 |
| 16 | 11.9 | 6:21 | 6:13 |
| 17 | 11.9 | 6:20 | 6:13 |
| 18 | 11.9 | 6:19 | 6:14 |
| 19 | 11.9 | 6:18 | 6:14 |
| 20 | 11.9 | 6:18 | 6:14 |
| 21 | 12.0 | 6:17 | 6:14 |
| 22 | 12.0 | 6:16 | 6:15 |
| 23 | 12.0 | 6:15 | 6:15 |
| 24 | 12.0 | 6:14 | 6:15 |
| 25 | 12.0 | 6:13 | 6:15 |
| 26 | 12.0 | 6:13 | 6:15 |
| 27 | 12.1 | 6:12 | 6:16 |
| 28 | 12.1 | 6:11 | 6:16 |
| 29 | 12.1 | 6:10 | 6:16 |
| 30 | 12.1 | 6:09 | 6:16 |
| 31 | 12.1 | 6:08 | 6:16 |
Solar energy in March
Average shortwave solar energy reaching the ground each day in March, about 6.14 kWh/m².
For context, solar energy here swings from a low near 4.46 kWh/m² to a high of 6.73 kWh/m² in July across the year — March's 6.14 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.8 | 5.8 | 5.8 | 5.8 | 5.9 | 5.9 | 5.9 | 5.9 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.1 | 6.1 | 6.1 | 6.2 | 6.2 | 6.2 | 6.2 | 6.3 | 6.3 | 6.3 | 6.3 | 6.4 | 6.4 | 6.4 | 6.4 | 6.5 | 6.5 | 6.5 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.8 | Bright |
| 2 | 5.8 | Bright |
| 3 | 5.8 | Bright |
| 4 | 5.8 | Bright |
| 5 | 5.9 | Bright |
| 6 | 5.9 | Bright |
| 7 | 5.9 | Bright |
| 8 | 5.9 | Bright |
| 9 | 6.0 | Bright |
| 10 | 6.0 | Bright |
| 11 | 6.0 | Intense |
| 12 | 6.0 | Intense |
| 13 | 6.0 | Intense |
| 14 | 6.1 | Intense |
| 15 | 6.1 | Intense |
| 16 | 6.1 | Intense |
| 17 | 6.2 | Intense |
| 18 | 6.2 | Intense |
| 19 | 6.2 | Intense |
| 20 | 6.2 | Intense |
| 21 | 6.3 | Intense |
| 22 | 6.3 | Intense |
| 23 | 6.3 | Intense |
| 24 | 6.3 | Intense |
| 25 | 6.4 | Intense |
| 26 | 6.4 | Intense |
| 27 | 6.4 | Intense |
| 28 | 6.4 | Intense |
| 29 | 6.5 | Intense |
| 30 | 6.5 | Intense |
| 31 | 6.5 | Intense |
Hazard calendar for Port Royal
None of Port Royal's seasonal hazards are active in March. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Port Royal sits in the Atlantic hurricane belt; the season peaks August–October.
Port Royal's rainy season runs August–November, when most of the year's rain falls.
Is March a good time to visit Port Royal?
Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
March is one of the better times to visit Port Royal for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Port Royal in March
From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In March, Port Royal sees daytime highs around 26°C and nights near 22°C. Pack sun protection. Worth having: light clothes. About 8 days see rain.
Sea temperature near Port Royal in March
The nearest coast averages about 27°C in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in September at about 29°C and coldest in February near 27°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 28 | Warm |
| May | 28 | Tropical |
| Jun | 28 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Tropical |
UV index in Port Royal in March
Clear-sky midday UV in March peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Port Royal peaks around April 19 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 7 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 8 | 10 | 12 | 13 | 12 | 13 | 11 | 12 | 12 | 11 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Extreme |
| Mar | 12 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 13 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | Very high |
Air quality in Port Royal in March
Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.
Air quality in Port Royal is worst in June — around 32 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (December, 8 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 10 | 10 | 12 | 19 | 32 | 31 | 25 | 17 | 14 | 9 | 8 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 10 | Good |
| Mar | 10 | Good |
| Apr | 12 | Good |
| May | 19 | Moderate |
| Jun | 32 | Moderate |
| Jul | 31 | Moderate |
| Aug | 25 | Moderate |
| Sep | 17 | Moderate |
| Oct | 14 | Moderate |
| Nov | 9 | Good |
| Dec | 8 | Good |
Where is Port Royal?
Port Royal sits at 17.9°N, 76.8°W, 0 m above sea level, in Jamaica. The nearest listed city is Portmore, 6.0 km away.
Topography around Port Royal
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Port Royal.
Within 3 km, the terrain around Port Royal has only modest variations in elevation — a maximum elevation change of 6 m around an average of 0 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 767 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,229 m.
The land around Port Royal is covered by water (94%) within 3 km, water (46%) and trees (29%) within 16 km, and water (59%) and trees (34%) within 80 km.
Jamaica travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B
- 110 V · 50 Hz
- Prices
- ≈ 60% of US
- price level, 2025
- GDP per capita
- $8,003
- 2025
- Happiness
- 6.3 / 10
- World Happiness, 2025
- Homicide rate
- 49.4
- per 100k, 2023
- Road deaths
- 15.1
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Port Royal (17.9374°, -76.8406°, elevation 0 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).