10-day forecast — St Lucia (Castries)
Refreshed hourly
Thu · Today · 12 Nov
Showers
86°
80°
0.03 in
Wind15 mph E
Gusts26 mph
UV index10 – Very high
Precip chance51%
Sunrise6:02 AM
Sunset5:33 PM
Fri · Tomorrow · 13 Nov
Showers
84°
81°
0.20 in
Wind16 mph E
Gusts24 mph
UV index10 – Very high
Precip chance79%
Sunrise6:03 AM
Sunset5:33 PM
Saturday · 14 Nov
Partly cloudy
86°
81°
0.01 in
Wind15 mph E
Gusts26 mph
UV index10 – Very high
Precip chance25%
Sunrise6:03 AM
Sunset5:33 PM
Sunday · 15 Nov
Showers
85°
78°
0.03 in
Wind14 mph E
Gusts23 mph
UV index7 – High
Precip chance45%
Sunrise6:04 AM
Sunset5:32 PM
Monday · 16 Nov
Showers
84°
80°
0.12 in
Wind13 mph E
Gusts20 mph
UV index6 – High
Precip chance71%
Sunrise6:04 AM
Sunset5:32 PM
Tuesday · 17 Nov
Showers
85°
78°
0.14 in
Wind14 mph E
Gusts21 mph
UV index6 – High
Precip chance74%
Sunrise6:04 AM
Sunset5:32 PM
Wednesday · 18 Nov
Showers
85°
80°
0.04 in
Wind13 mph E
Gusts23 mph
UV index6 – High
Precip chance59%
Sunrise6:05 AM
Sunset5:32 PM
Thursday · 19 Nov
Showers
85°
80°
0.04 in
Wind14 mph E
Gusts23 mph
UV index6 – High
Precip chance59%
Sunrise6:05 AM
Sunset5:32 PM
Friday · 20 Nov
Showers
85°
80°
0.16 in
Wind13 mph E
Gusts21 mph
UV index6 – High
Precip chance74%
Sunrise6:06 AM
Sunset5:32 PM
Saturday · 21 Nov
Showers
85°
79°
0.10 in
Wind12 mph E
Gusts21 mph
UV index6 – High
Precip chance70%
Sunrise6:06 AM
Sunset5:32 PM
Sunday · 22 Nov
Showers
84°
80°
0.19 in
Wind12 mph E
Gusts20 mph
UV index6 – High
Precip chance78%
Sunrise6:07 AM
Sunset5:32 PM
Monday · 23 Nov
Showers
84°
80°
0.33 in
Wind13 mph E
Gusts22 mph
UV index6 – High
Precip chance82%
Sunrise6:07 AM
Sunset5:32 PM
Tuesday · 24 Nov
Showers
84°
80°
0.41 in
Wind14 mph E
Gusts24 mph
UV index6 – High
Precip chance80%
Sunrise6:08 AM
Sunset5:32 PM
Wednesday · 25 Nov
Light drizzle
83°
79°
0.44 in
Wind12 mph E
Gusts22 mph
UV index6 – High
Precip chance82%
Sunrise6:08 AM
Sunset5:32 PM
About St Lucia (Castries)
CountrySaint Lucia
RegionCastries
Population20,000
ContinentNorth America & Caribbean
Time zoneAmerica/St_Lucia (-04:00)
Latitude14.0100°
Longitude-60.9870°
Air QualityModerate (AQI 62)
Details & indices
Wind
13 mph E
Gusts 22 mph
Humidity
74%
Dew point 73°
Pressure
29.91 inHg
Rising
UV index
10 — Very high
High today
Air Quality
Moderate
AQI 62 · US EPA
Visibility
6 mi
Clear view
Sun & moon
Sunrise6:02 AM
Sunset5:33 PM
Length of day11h 31m
Moonrise9:08 AM
Moonset8:33 PM
Moon phase🌔 Waxing Crescent
Local time6:00 PM (-04:00)
St Lucia (Castries) climate in August
8-year averages · when to visitBest months: January–December · August: Good
| July | August | September | |
|---|---|---|---|
| Average temperature | → 81°F | 81°F | ▲ 82°F |
| Typical high | → 84°F | 84°F | ▲ 86°F |
| Typical low | → 77°F | 77°F | ▲ 79°F |
| Water temperature | ▲ 84°F | 85°F | ▲ 86°F |
| Precipitation | ▼ 5.3 in | 4.4 in | ▼ 3.6 in |
| Wet days | ▼ 27 d | 24 d | ▼ 19 d |
| Humidity | → 77% | 77% | ▼ 76% |
| Sunshine per day | → 11.3 h | 11.3 h | → 11.3 h |
| Cloud cover | ▼ 12% | 10% | ▼ 7% |
| Midday UV | → 12 | 12 | → 12 |
| Daylight | 12:52 | 12:34 | 12:12 |
| Our take | Good | Good | Good |
August temperatures day by day daily mean + smoothed trend · °F
August precipitation day by day in
August UV day by day clear-sky midday value
Figures are averaged over 8 years of ERA5 reanalysis; sea temps come from ocean reanalysis, and UV is derived from solar elevation.
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NBM + global weather models
Updated: 6:00 PM
St Lucia (Castries), Saint Lucia · 14.01°N, 60.99°W · America/St_Lucia · Forecast computed for these exact coordinates