The best times to visit Terceira Island for ideal weather are
May 14th to September 2nd
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Terceira Island Travel Guide
Other Terceira Island Travel Info
Weather in Terceira Island
Average temperatures in Terceira Island vary little. Considering humidity, temperatures feel very enjoyable all year with a fair chance of precipitation about half of the year. The area is more temperate than most — in the 75th 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 Terceira Island, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally mid to late August where highs are regularly around 78.9°F (26.1°C) with temperatures rarely dropping below 68.6°F (20.3°C) at night.
Terceira Island Temperatures (Fahrenheit)
Terceira Island 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.
Terceira Island Perceived Temperature (F)
Terceira Island Perceived Temperature (C)
Average Terceira 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.
|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 Terceira Island are July, August, 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 late May. For example, on the week of May 21st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid November with an average of 3 days of significant precipitation the week of November 12th.
When can you find snow in Terceira 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 Terceira Island.
Snow on the Ground
The graph below shows the average snow on the ground in Terceira Island (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
Terceira Island has some very humid months, and high humidity throughout the year. The least humid month is November (71.5% relative humidity), and the most humid month is January (76.9%).
Wind in Terceira Island is usually moderate. The windiest month is December, followed by February and January. December’s average wind speed of around 8.6 knots (9.9 MPH or 16 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 December where average top sustained speeds reach 16.3 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Terceira Island.
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||8.4||Gentle breeze||14.1||Significant breeze|
|Feb||8.4||Gentle breeze||14.3||Significant breeze|
|Mar||7.9||Gentle breeze||13.2||Significant breeze|
|Apr||7.6||Gentle breeze||13.2||Significant breeze|
|May||6.8||Light breeze||11.9||Significant breeze|
|Jun||6.2||Light breeze||11||Significant breeze|
|Jul||5.5||Light breeze||9.8||Significant breeze|
|Aug||5.8||Light breeze||10.3||Gentle breeze|
|Sep||6.4||Light breeze||11||Significant breeze|
|Oct||7.3||Gentle breeze||12.5||Significant breeze|
|Nov||7.7||Gentle breeze||12.7||Significant breeze|
|Dec||8.6||Gentle breeze||14.8||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Terceira Island?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Portugal; 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 Terceira Island, Portugal is January, followed by February 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 Terceira Island in November. 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 Terceira Island Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderate. Highs range from 69°F (20.6°C) and 61.7°F (16.5°C) with warmer temperatures in the later months. Rain is somewhat common with 5 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 comfortable. These months see the least precipitation with 3 to 4 days of precipitation per month. June – August is the second busiest season for tourism in Terceira Island, so lodging and other accommodations may cost slightly more.
Fall (September through November)
Fall daily highs range from 77°F (25°C) and 63.8°F (17.7°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 6 to 9 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 somewhat cool this time of year in Terceira Island to be enjoyable for warm weather travelers. The average high during this season is between 63.7°F (17.6°C) and 61.5°F (16.4°C). On average, it rains or snows a fair amount: 7 to 11 times per month. These times of year are the busiest with tourists.