Vieques Temperature by Month
Vieques in Puerto Rico enjoys a stable climate, with daytime temperatures staying close to 28°C (82°F) throughout the year. Explore the full monthly breakdown below.
Vieques Monthly Temperatures
Vieques enjoys a stable climate with temperatures staying pretty much the same throughout the year. Maximum daytime temperatures range from a comfortable 27°C (81°F) in February to a comfortable 30°C (86°F) in September. Nights are consistently cool, with lows between 27°C (81°F) and 24°C (75°F).
The chart below illustrates the average maximum day and minimum night temperatures in Vieques by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. September, the warmest month of the year, receives 236 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in July
Historical Vieques Temperatures: 1976-2026
Browse day-by-day temperature records for Vieques spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Vieques vs Puerto Rico
The map below shows the annual temperature across Puerto Rico. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Vieques vs World: Temperature Compared
Vieques's average annual maximum temperature is 28°C (82°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
What Does the Temperature Feel Like in Vieques?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Vieques, February is the coolest month, with average highs of 27°C (81°F) and humidity around 72% — considered high. In September, the warmest month, temperatures average 30°C (86°F) with 76% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Vieques this rarely lasts long on the ground.
For more on Vieques's weather — including monthly rainfall, sunshine hours, and humidity — visit our Vieques climate page.
