Saint Lucia Weather Forecast
Saint Lucia weather: 75°F, mainly clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Risk assessment for Saint Lucia
Derived from the current forecast window - not an official warning.
Peak gusts of 28 mph and 5 thunderstorm days in the next 16 days.
Wettest single day forecast at 0,4 in, 2,4 in across the window. Flash flooding risk rises sharply above 50 mm in a day.
16-day forecast for Saint Lucia
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Fri, Sep 18 | 🌦️ Light showers | 85° / 73° | 91% · 0,2 in | 8 mph | 9 |
| Sat, Sep 19 | 🌦️ Light showers | 86° / 72° | 53% · 0,2 in | 6 mph | 9 |
| Sun, Sep 20 | 🌦️ Light drizzle | 86° / 74° | 59% · 0,1 in | 6 mph | 9 |
| Mon, Sep 21 | 🌦️ Light drizzle | 88° / 74° | 29% · 0,0 in | 6 mph | 9 |
| Tue, Sep 22 | 🌦️ Drizzle | 87° / 73° | 60% · 0,1 in | 9 mph | 8 |
| Wed, Sep 23 | ⛈️ Thunderstorm | 82° / 71° | 84% · 0,3 in | 9 mph | 9 |
| Thu, Sep 24 | ⛈️ Thunderstorm | 83° / 73° | 73% · 0,1 in | 9 mph | 9 |
| Fri, Sep 25 | 🌦️ Light drizzle | 85° / 74° | 63% · 0,0 in | 9 mph | 8 |
| Sat, Sep 26 | ⛈️ Thunderstorm | 83° / 75° | 80% · 0,2 in | 7 mph | 8 |
| Sun, Sep 27 | 🌦️ Light drizzle | 86° / 74° | 76% · 0,1 in | 6 mph | 7 |
| Mon, Sep 28 | 🌦️ Light drizzle | 85° / 74° | 95% · 0,1 in | 5 mph | 9 |
| Tue, Sep 29 | 🌦️ Drizzle | 85° / 70° | 84% · 0,3 in | 7 mph | 9 |
| Wed, Sep 30 | ⛈️ Thunderstorm | 78° / 71° | 80% · 0,4 in | 6 mph | 9 |
| Thu, Oct 1 | 🌦️ Drizzle | 82° / 73° | 76% · 0,1 in | 6 mph | 9 |
| Fri, Oct 2 | ⛈️ Thunderstorm | 83° / 73° | 55% · 0,1 in | 13 mph | 6 |
| Sat, Oct 3 | ☀️ Clear sky | -- / -- | 48% | -- | — |
What this means for Saint Lucia
Today is about average for September. The forecast high of 85°F is in line with the 86°F typical for this month.
A 91% chance means rain is expected over most of the area. Plan indoor alternatives.
Wet roads are likely; braking distances roughly double in heavy rain.
Within 15 degrees of the equator, day length barely changes all year; seasons are defined by rain, not temperature.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 37°F - an unusually even climate through the year.
See the Saint Lucia forecast by time range
Saint Lucia weather - more answers
Explore Saint Lucia
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Frequently asked questions
Where is Saint Lucia?
Saint Lucia is an island in Saint Lucia. Its coordinates are 13.9094, -60.9789. It lies in North America.
What is the weather like in Saint Lucia right now?
It is currently 75°F (24°C) with mainly clear. Humidity is 91% and wind is 6 mph.
When is the best time to visit Saint Lucia?
January, February, March, April, May, June, August, September, October, November and December offer the most comfortable conditions in Saint Lucia, which has a Mediterranean climate. June, July and September are usually the hardest months for outdoor plans.
What time zone is Saint Lucia in?
Saint Lucia observes America/St_Lucia (UTC-04:00). The local time is 3:18 AM.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (islands) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated September 18, 2026 at 3:18 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
