The best times to visit St Johns for ideal weather are
January 29th to April 1st
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
St Johns Travel Guide
Other St Johns Travel Info
Weather in St Johns
Average temperatures in St Johns vary very little. Considering humidity, temperatures feel hot all year with a chance of rain throughout most of the year. The area is far less temperate than some — in the 5th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit St Johns, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally mid August where highs are regularly around 88.4°F (31.3°C) with temperatures rarely dropping below 77.5°F (25.3°C) at night.
St Johns Temperatures (Fahrenheit)
St Johns Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
St Johns Perceived Temperature (F)
St Johns Perceived Temperature (C)
Average St Johns Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in St Johns are March, February, and then April. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid February. For example, on the week of February 12th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late September with an average of 3 days of significant precipitation the week of September 24th.
When can you find snow in St Johns? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in St Johns.
Snow on the Ground
The graph below shows the average snow on the ground in St Johns (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
St Johns has some very humid months, and above average humidity throughout the year. The least humid month is March (64.5% relative humidity), and the most humid month is October (72.9%).
Wind in St Johns is usually moderate. The windiest month is July, followed by February and June. July’s average wind speed of around 11.4 knots (13.2 MPH or 21.2 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid July where average top sustained speeds reach 15.5 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in St Johns.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||10.3||Gentle breeze||14||Significant breeze|
|Feb||10.6||Gentle breeze||14.7||Significant breeze|
|Mar||9.8||Gentle breeze||13.7||Significant breeze|
|Apr||9.9||Gentle breeze||14.1||Significant breeze|
|May||9.5||Gentle breeze||13.5||Significant breeze|
|Jun||10.6||Gentle breeze||14.2||Significant breeze|
|Jul||11.4||Significant breeze||15.2||Significant breeze|
|Aug||10.3||Gentle breeze||14.4||Significant breeze|
|Sep||7.6||Gentle breeze||12.3||Significant breeze|
|Oct||7.7||Gentle breeze||12.4||Significant breeze|
|Nov||8.1||Gentle breeze||12.3||Significant breeze|
|Dec||9.2||Gentle breeze||13.2||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to St Johns?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Antigua and Barbuda; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Aug 28, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in St Johns, Antigua and Barbuda is January, followed by February and June. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit St Johns in August. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall St Johns Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 86.8°F (30.4°C) and 83.4°F (28.6°C) with warmer temperatures in the later months. Rain is somewhat common with 4 to 8 days of significant precipitation per month. Spring is the slowest for tourism, which makes it a good time for those looking for deals.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see moderate precipitation with 7 to 9 days of precipitation per month. June – August is the second busiest season for tourism in St Johns, so lodging and other accommodations may cost slightly more.
Fall (September through November)
Fall daily highs range from 88.3°F (31.3°C) and 84.9°F (29.4°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 8 to 10 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.
Winter (December through February)
Weather is perfect this time of year in St Johns to be enjoyable for warm weather travelers. The average high during this season is between 84.3°F (29.1°C) and 82.7°F (28.2°C). On average, it rains or snows a fair amount: 3 to 8 times per month. These times of year are the busiest with tourists.
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