St. John's, Antigua and Barbuda 14-Day Forecast
83°
Patchy rain nearby right now
Today: high 84°, low 80°
Updated 16 min ago
St. John's weather for the next 14 days
Wednesday, September 16
Light rain shower High 84° Low 81°Precipitation
87%
· 1.06 in
Max wind
21 mph
Humidity
81%
UV index
10 - Very High
Sunrise / sunset
05:55 AM / 06:08 PM
Thursday, September 17
Patchy rain nearby High 84° Low 82°Precipitation
78%
· 0.13 in
Max wind
20 mph
Humidity
78%
UV index
10 - Very High
Sunrise / sunset
05:55 AM / 06:08 PM
Friday, September 18
Patchy rain nearby High 84° Low 81°Precipitation
71%
· 0.14 in
Max wind
16 mph
Humidity
76%
UV index
12 - Extreme
Sunrise / sunset
05:55 AM / 06:07 PM
Saturday, September 19
Patchy rain nearby High 84° Low 81°Precipitation
47%
· 0.03 in
Max wind
12 mph
Humidity
74%
UV index
11 - Extreme
Sunrise / sunset
05:56 AM / 06:06 PM
Sunday, September 20
Overcast High 84° Low 81°Precipitation
68%
· 0.1 in
Max wind
14 mph
Humidity
73%
UV index
6 - High
Sunrise / sunset
05:56 AM / 06:05 PM
Monday, September 21
Patchy rain nearby High 84° Low 81°Precipitation
69%
· 0.08 in
Max wind
17 mph
Humidity
75%
UV index
6 - High
Sunrise / sunset
05:56 AM / 06:04 PM
Tuesday, September 22
Patchy rain nearby High 84° Low 82°Precipitation
52%
· 0.03 in
Max wind
17 mph
Humidity
74%
UV index
6 - High
Sunrise / sunset
05:56 AM / 06:03 PM
Wednesday, September 23
Patchy rain nearby High 85° Low 81°Precipitation
71%
· 0.16 in
Max wind
15 mph
Humidity
78%
UV index
7 - High
Sunrise / sunset
05:56 AM / 06:03 PM
Thursday, September 24
Patchy rain nearby High 84° Low 82°Precipitation
64%
· 0.07 in
Max wind
17 mph
Humidity
76%
UV index
6 - High
Sunrise / sunset
05:56 AM / 06:02 PM
Friday, September 25
Patchy rain nearby High 84° Low 82°Precipitation
30%
· 0.01 in
Max wind
16 mph
Humidity
76%
UV index
7 - High
Sunrise / sunset
05:56 AM / 06:01 PM
Saturday, September 26
Patchy rain nearby High 84° Low 82°Precipitation
37%
· 0.02 in
Max wind
14 mph
Humidity
73%
UV index
7 - High
Sunrise / sunset
05:56 AM / 06:00 PM
Sunday, September 27
Sunny High 84° Low 81°Precipitation
67%
· 0.2 in
Max wind
10 mph
Humidity
72%
UV index
7 - High
Sunrise / sunset
05:57 AM / 05:59 PM
Monday, September 28
Patchy rain nearby High 84° Low 80°Precipitation
63%
· 0.09 in
Max wind
14 mph
Humidity
75%
UV index
7 - High
Sunrise / sunset
05:57 AM / 05:58 PM
St. John's 14-day outlook: the story
The warmest day of St. John's's 14-day outlook is Wednesday, September 23 with a high near 85°F (29°C); the coolest night comes Monday, September 28, dipping to 80°F (27°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 84°F (29°C), right in line with the typical September high of 86°F (30°C).
Precipitation is most likely on Tuesday 15, Wednesday 16, Thursday 17, Friday 18 and beyond; the wettest day looks like Wednesday, September 16 with about 1.06 in (26.9 mm) expected. For the weekend, expect Saturday 84°F (29°C) and patchy rain nearby / Sunday 84°F (29°C) and overcast.
For typical conditions month by month, see the St. John's climate & average temperatures guide.
St. John's forecast questions
Will it rain in St. John's this week?
The forecast currently shows meaningful precipitation chances on 11 of the next 14 days, peaking around Wednesday, September 16.
What will be the warmest day in St. John's over the next 14 days?
Wednesday, September 23, with a forecast high near 85°F (29°C).
How accurate is a 14-day forecast for St. John's?
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 St. John's by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 81° | 75° | 15 | 1.6 in | 10.7 h/day | 72% |
| February | 81° | 75° | 14 | 2.0 in | 10.9 h/day | 71% |
| March | 82° | 75° | 15 | 1.8 in | 11.5 h/day | 70% |
| April | 83° | 76° | 16 | 2.1 in | 11.7 h/day | 72% |
| May | 84° | 78° | 16 | 2.3 in | 11.5 h/day | 73% |
| June | 85° | 79° | 16 | 2.3 in | 11.6 h/day | 73% |
| July | 86° | 79° | 20 | 3.1 in | 11.7 h/day | 75% |
| August | 86° | 79° | 21 | 4.2 in | 11.4 h/day | 76% |
| September | 86° | 79° | 21 | 4.4 in | 11.0 h/day | 77% |
| October | 85° | 79° | 20 | 4.3 in | 10.6 h/day | 77% |
| November | 84° | 78° | 19 | 4.1 in | 10.1 h/day | 76% |
| December | 82° | 76° | 16 | 1.9 in | 10.4 h/day | 72% |
14-day forecasts nearby