The best times to visit Principe Island for ideal weather are

January 1st to December 30th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Principe Island Travel Info

Weather in Principe Island


Average temperatures in Principe Island vary very little. Considering humidity, temperatures feel hot all year with a very low chance of rain throughout the year. The area is less temperate than some — in the 34th 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 Principe Island, the hottest months are March, April, and then February. See average monthly temperatures below. The warmest time of year is generally early to mid March where highs are regularly around 87.7°F (30.9°C) with temperatures rarely dropping below 75.2°F (24°C) at night.

Principe Island Temperatures (Fahrenheit)


Principe Island Temperatures (Celsius)


“Feels-Like” Temperatures

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.

Principe Island Perceived Temperature (F)


Principe Island Perceived Temperature (C)



Average Principe Island 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.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 86.2 80.3 73.7
Feb 87.1 80.8 74.2
Mar 86.9 81.1 74.5
Apr 86.7 80.9 74.8
May 85.9 80.8 75
Jun 82.9 78.5 74.2
Jul 81.3 76.8 72.4
Aug 82.7 77.6 72.7
Sep 84 79.1 73.9
Oct 84.4 79.5 74.2
Nov 84.3 79.6 74.4
Dec 85 80.3 74.8

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 30.1 26.8 23.2
Feb 30.6 27.1 23.4
Mar 30.5 27.3 23.6
Apr 30.4 27.2 23.8
May 29.9 27.1 23.9
Jun 28.3 25.8 23.4
Jul 27.4 24.9 22.4
Aug 28.2 25.3 22.6
Sep 28.9 26.2 23.3
Oct 29.1 26.4 23.4
Nov 29.1 26.4 23.6
Dec 29.4 26.8 23.8



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Principe Island are April, May, and then June. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late March with an average of 0 days of significant precipitation the week of March 26th.

When can you find snow in Principe Island? 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 Principe Island.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Principe Island (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 2% 0 1
Feb 2% 0 0.4
Mar 2% 0 0.6
Apr 0% 0 0
May 0% 0 0
Jun 0% 0 0
Jul 0% 0 0
Aug 0% 0 0
Sep 0% 0 0
Oct 1% 0 0.1
Nov 0% 0 0
Dec 1% 0 0.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 2 0 2.5
Feb 2 0 1
Mar 2 0 1.5
Apr 0 0 0
May 0 0 0
Jun 0 0 0
Jul 0 0 0
Aug 0 0 0
Sep 0 0 0
Oct 1 0 0.3
Nov 0 0 0
Dec 1 0 0.3


Humidity and Wind

Principe Island has some very humid months, and high humidity throughout the year. The least humid month is September (73.8% relative humidity), and the most humid month is November (79%).

Wind in Principe Island is usually calm. The windiest month is June, followed by July and August. June’s average wind speed of around 10.1 knots (11.6 MPH or 18.7 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late June where average top sustained speeds reach 15.8 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Principe Island.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

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 4.8 Light breeze 10.1 Gentle breeze
Feb 5.3 Light breeze 11.6 Significant breeze
Mar 6 Light breeze 13.3 Gentle breeze
Apr 6.2 Light breeze 12.9 Significant breeze
May 7.2 Gentle breeze 14 Gentle breeze
Jun 10.1 Gentle breeze 15.2 Significant breeze
Jul 9.4 Gentle breeze 14.8 Gentle breeze
Aug 7.5 Gentle breeze 13 Significant breeze
Sep 6.7 Light breeze 12.8 Gentle breeze
Oct 5.9 Light breeze 11.8 Significant breeze
Nov 6.2 Light breeze 12.6 Gentle breeze
Dec 5.2 Light breeze 10.8 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 78.4%
Feb 77.3%
Mar 77.5%
Apr 77.9%
May 76.8%
Jun 74.8%
Jul 74.3%
Aug 73.8%
Sep 73.8%
Oct 77.5%
Nov 79%
Dec 77.9%


Is it Safe to Travel to Principe Island?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Sao Tome and Principe; 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 22, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Principe Island, Sao Tome and Principe is November, followed by December and October. 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 Principe Island in January. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 36.8 in January means 36.8% of the tourists vs. November.



Overall Principe Island Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel warm. Highs range from 87.3°F (30.7°C) and 84.8°F (29.3°C) with similar temperatures in the later months. Rain is extremely rare with 0 to 1 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 comfortable. These months see the least precipitation with about 0 days of precipitation per month. June – August is fairly slow season for tourism in Principe Island, so lodging and other accommodations may cost slightly less.

Fall (September through November)

Fall daily highs range from 85°F (29.4°C) and 83.7°F (28.7°C), which will feel very nice given the humidity and wind. It rains or snows a trivial amount: approximately 0 days per month. Tourism is the busiest during these months due to the weather, so hotels may be higher priced.

Winter (December through February)

Weather is perfect this time of year in Principe Island to be enjoyable for warm weather travelers. The average high during this season is between 87.7°F (30.9°C) and 84.6°F (29.2°C). On average, it rains or snows a very small amount: 0 to 1 times per month. These times of year are the second busiest with tourists.


Best Times to TravelSao Tome and Principe › Principe Island, Sao Tome and Principe