Castries, Saint Lucia 14-Day Forecast
Saint Lucia 🇱🇨
85°
Sunny right now
Today: high 85°, low 80°
Updated 1 hour ago
Castries weather for the next 14 days
Thursday, August 27
Patchy rain nearby High 84° Low 80°Precipitation
75%
· 0.17 in
Max wind
16 mph
Humidity
77%
UV index
9 - Very High
Sunrise / sunset
05:52 AM / 06:19 PM
Friday, August 28
Patchy rain nearby High 85° Low 80°Precipitation
81%
· 0.24 in
Max wind
18 mph
Humidity
80%
UV index
6 - High
Sunrise / sunset
05:52 AM / 06:18 PM
Saturday, August 29
Patchy rain nearby High 85° Low 80°Precipitation
58%
· 0.04 in
Max wind
18 mph
Humidity
78%
UV index
7 - High
Sunrise / sunset
05:52 AM / 06:17 PM
Sunday, August 30
Patchy rain nearby High 88° Low 80°Precipitation
48%
· 0.03 in
Max wind
18 mph
Humidity
75%
UV index
7 - High
Sunrise / sunset
05:52 AM / 06:17 PM
Monday, August 31
Patchy rain nearby High 86° Low 80°Precipitation
41%
· 0.02 in
Max wind
15 mph
Humidity
77%
UV index
7 - High
Sunrise / sunset
05:52 AM / 06:16 PM
Tuesday, September 1
Patchy rain nearby High 85° Low 81°Precipitation
28%
· 0.01 in
Max wind
17 mph
Humidity
74%
UV index
6 - High
Sunrise / sunset
05:52 AM / 06:15 PM
Wednesday, September 2
Patchy rain nearby High 86° Low 81°Precipitation
65%
· 0.07 in
Max wind
18 mph
Humidity
78%
UV index
7 - High
Sunrise / sunset
05:52 AM / 06:15 PM
Thursday, September 3
Patchy rain nearby High 86° Low 81°Precipitation
41%
· 0.01 in
Max wind
17 mph
Humidity
78%
UV index
6 - High
Sunrise / sunset
05:52 AM / 06:14 PM
Friday, September 4
Patchy rain nearby High 85° Low 81°Precipitation
49%
· 0.03 in
Max wind
20 mph
Humidity
79%
UV index
7 - High
Sunrise / sunset
05:52 AM / 06:13 PM
Saturday, September 5
Light rain shower High 86° Low 80°Precipitation
86%
· 0.7 in
Max wind
16 mph
Humidity
78%
UV index
7 - High
Sunrise / sunset
05:52 AM / 06:13 PM
Sunday, September 6
Patchy rain nearby High 85° Low 81°Precipitation
84%
· 0.32 in
Max wind
18 mph
Humidity
79%
UV index
6 - High
Sunrise / sunset
05:52 AM / 06:12 PM
Monday, September 7
Overcast High 85° Low 81°Precipitation
24%
· 0.0 in
Max wind
19 mph
Humidity
74%
UV index
6 - High
Sunrise / sunset
05:52 AM / 06:11 PM
Tuesday, September 8
Patchy rain nearby High 85° Low 80°Precipitation
45%
· 0.02 in
Max wind
18 mph
Humidity
74%
UV index
6 - High
Sunrise / sunset
05:52 AM / 06:10 PM
Castries 14-day outlook: the story
The warmest day of Castries's 14-day outlook is Sunday, August 30 with a high near 88°F (31°C); the coolest night comes Sunday, August 30, dipping to 80°F (26°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 86°F (30°C), right in line with the typical August high of 85°F (29°C).
Precipitation is most likely on Thursday 27, Friday 28, Saturday 29, Wednesday 2 and beyond; the wettest day looks like Saturday, September 5 with about 0.7 in (17.8 mm) expected. For the weekend, expect Saturday 85°F (30°C) and patchy rain nearby / Sunday 88°F (31°C) and patchy rain nearby.
For typical conditions month by month, see the Castries climate & average temperatures guide.
Castries forecast questions
Will it rain in Castries this week?
The forecast currently shows meaningful precipitation chances on 6 of the next 14 days, peaking around Saturday, September 5.
What will be the warmest day in Castries over the next 14 days?
Sunday, August 30, with a forecast high near 88°F (31°C).
How accurate is a 14-day forecast for Castries?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Castries by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 81° | 73° | 18 | 2.2 in | 10.8 h/day | 76% |
| February | 81° | 73° | 13 | 1.8 in | 11.1 h/day | 74% |
| March | 82° | 73° | 15 | 1.9 in | 11.6 h/day | 74% |
| April | 84° | 74° | 12 | 1.5 in | 11.8 h/day | 73% |
| May | 85° | 76° | 13 | 1.9 in | 11.7 h/day | 74% |
| June | 85° | 76° | 19 | 3.3 in | 11.3 h/day | 77% |
| July | 84° | 76° | 24 | 4.6 in | 11.5 h/day | 80% |
| August | 85° | 76° | 23 | 4.2 in | 11.3 h/day | 80% |
| September | 86° | 77° | 22 | 4.5 in | 11.2 h/day | 80% |
| October | 85° | 76° | 21 | 3.9 in | 10.8 h/day | 80% |
| November | 83° | 75° | 21 | 4.4 in | 10.5 h/day | 80% |
| December | 82° | 74° | 17 | 2.2 in | 10.7 h/day | 77% |
14-day forecasts nearby