Your November weather guide

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Weather in St Lucia in November

November is a good time for St Lucia if you want heat and warm swimming water, but not if reliable dry weather is your priority. Daytime temperatures average 28°C and the sea is around 28.4°C, so the warmth is there for a beach holiday. The catch is rain on about 20 days. For a UK traveller, it suits a flexible break with time outdoors when conditions allow, rather than plans that depend on clear skies throughout.

Long-term climate averages for Castries, not a forecast · 1991-2020

St Lucia, month by month

Your snapshot

At a glance

The useful details for Castries.

Average daytime high
28.0°C
9 in 10 days stay below 29°C
Average night-time low
24.5°C
coldest 10% of nights: 24°C or lower
Compared with London
+17.6°C
London averages 10.4°C in November
Sea temperature
28.4°C
year to year: 28°C to 29°C
Sunshine per day (est.)
5.3h
47% of 11.3 h of daylight
Rainy days (1 mm+)
20
103 mm over the month
Humidity
80%
Days over 25°C
100%
0% over 30°C
Record high 1991-2020
30.0°C
2019-11-19
Record low 1991-2020
22.6°C
2019-11-17
Flight from London
≈ 9 h 12 min
6781 km, long-haul (estimate for a direct flight)

Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.

How November compares

November is the 8th warmest month of the year in St Lucia and ranks 23rd of 134 destinations we compare for November - see where else is hot in November. Against London's average high of 10.4°C in November, St Lucia is 17.6°C warmer by day and 19.6°C warmer at night.

Daytime and night-time in November

The typical November day in St Lucia peaks at 28.0°C, but that is an average: the warmest 10% of days reach 29.0°C or more. About 100% of days top 25°C and 1 in 1000 pass 30°C. Nights average 24.5°C; one night in ten drops to 23.6°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest November day here reached 30.0°C (2019-11-19) and the coldest night 22.6°C (2019-11-17).

Rain in November

Wet (more than 8 rainy days): about 20 days with 1 mm or more, 103 mm in total. Year to year it varies a lot - the wettest November was 2016 with 229 mm, the driest 2012 with 27 mm. Humidity averages 80%, which makes the heat feel heavier than the thermometer suggests.

Sea temperature in November

The sea averages 28.4°C - warm enough to swim (22°c+). Depending on the year it ranges from 28.1°C to 28.8°C. For the warmest sea here, come in September (29.0°C).

Sunshine and daylight

Around 5.3 hours of sunshine a day (estimated from cloud cover), 11.3 hours of daylight: the sun rises about 06:04 and sets about 17:33 local time in mid-November. Average cloud cover is 53%.

Is November a good time to visit St Lucia?

It is a reasonable choice: hot days but expect showers. The best months for St Lucia on our scoring are February, March, January; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Proper warmth, with little cooling after dark

Expect a clear change from London's November daytime average of 10.4°C. St Lucia feels hot rather than merely mild, and humidity of 80% can make time outdoors feel sticky, especially around midday. Loose, breathable clothing is a better choice than heavy fabrics, and it makes sense to leave room for shade and slower afternoons. Nights average 24.5°C, so evenings offer limited relief from the warmth; check that your accommodation has cooling you will be comfortable sleeping with. This is a good fit if you dislike chilly evenings, but less appealing if humid nights tend to disrupt your sleep. Pack primarily for heat, not for a cool-weather autumn trip.

Plan for sunshine mixed with wet weather

November is wet, but that does not mean you should expect every day to be a washout. There are about 5.3 hours of sunshine within 11.3 hours of daylight, leaving scope for swimming and time outside without promising uninterrupted sun. The useful approach is to keep outdoor plans movable and carry lightweight rain protection that will not feel too heavy in the heat. Avoid building the trip around a rigid sequence of dry-weather days. If you would find frequent rain frustrating after a long flight, November is a compromise rather than an obvious choice. If warmth matters more than clear skies, the balance is easier to accept.

A little perspective

St Lucia through the year

November is highlighted. See how it compares with the rest of the year.

Monthly climate averages

Swipe sideways on a phone; the month stays in view.

St Lucia monthly climate averages, 1991-2020; November is the selected month.
MonthDayNightSeaSun/dayRain mmRainy daysDays 25°C+
Januarybest27.0°C23.5°C27.0°C7.1361399%
Februarybest27.4°C23.3°C26.6°C7.2251099%
Marchbest27.9°C23.5°C26.7°C6.73011100%
April28.5°C24.1°C27.1°C5.83912100%
May29.1°C24.8°C27.6°C5.25113100%
June29.0°C25.0°C27.8°C4.86816100%
July28.8°C24.9°C28.0°C5.88921100%
August29.0°C25.1°C28.6°C5.610121100%
September29.2°C25.2°C29.0°C4.610620100%
October28.7°C25.0°C28.9°C4.511821100%
NovemberSelected28.0°C24.5°C28.4°C5.310320100%
December27.5°C24.0°C27.7°C6.44614100%

Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.

Day, night and sea

Monthly average temperatures, 1991-2020

  • Day
  • Night
  • Sea
Bars show average daytime highs and night-time lows; circles mark the average sea temperature. Same scale for every month. Exact values are in the table.

Best months here

On warmth, low rainfall and sunshine, start with these.

Keep exploring

Similar in November

Closest matches on daytime temperature, sea temperature and sunshine, in other countries.

A little more detail

St Lucia in November FAQs

Plain answers, grounded in the averages.

Is St Lucia hot in November?

St Lucia is hot in November: the average daytime high is 28.0°C and nights average 24.5°C. About 100% of November days reach 25°C or more.

Can you swim in the sea in St Lucia in November?

The sea around St Lucia averages 28.4°C in November, which is warm enough for most people to swim comfortably. Between 1991 and 2020 it ranged from 28°C to 29°C depending on the year.

How much does it rain in St Lucia in November?

St Lucia sees about 20 rainy days (1 mm or more) and 103 mm of rain in a typical November. The wettest November between 1991 and 2020 was 2016 (229 mm) and the driest was 2012 (27 mm).

How sunny is St Lucia in November?

St Lucia gets around 5.3 hours of sunshine a day in November out of 11.3 hours of daylight (estimated from average cloud cover).

How does St Lucia compare with the UK in November?

St Lucia is on average 17.6°C warmer than London by day in November (28.0°C against 10.4°C).

What is the hottest November on record in St Lucia?

Between 1991 and 2020 the hottest November day in St Lucia reached 30.0°C on 2019-11-19, and the coldest night dropped to 22.6°C on 2019-11-17.

Is the sea warm enough for swimming in November?

Yes. The sea averages 28.4°C, so it is warm enough for comfortable swimming rather than a bracing dip. That makes swimming a strong reason to consider November, although water temperature alone does not tell you what conditions will be like on the day.

How long is the flight from London?

The flight from London is about 9 h 12 min, making this a long-haul trip. The decision is whether dependable warmth is enough of a reward for you, given that November also brings frequent wet weather.

Would another month be a better choice?

February, March and January are the stronger overall choices for weather. November still suits travellers who prioritise hot days and warm water, but if your dates are flexible, those months are better starting points for deciding when to go.

About these averages

ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020

Averages computed from daily values at Castries. Sea temperature from the nearest 5 km sea cell, 3.1 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather