Diamond Temperature by Month
The average annual maximum temperature in Diamond, Tobago, Trinidad & Tobago is 29°C (84°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Diamond compares to cities worldwide.
Diamond Monthly Temperatures
The temperature in Diamond remains steady throughout the year, providing a consistently comfortable climate. Maximum daytime temperatures range from a comfortable 30°C (86°F) in September to a comfortable 28°C (82°F) in February. Nights are mild year-round, with lows ranging from 27°C (81°F) in September to 25°C (77°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Diamond by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
45-year average (1978-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in June
Historical Diamond Temperatures: 1976-2026
Browse day-by-day temperature records for Diamond spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Diamond vs Trinidad & Tobago
The map below shows the annual temperature across Trinidad & Tobago. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Diamond vs World: Temperature Compared
Diamond's average annual maximum temperature is 29°C (84°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
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.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Diamond's weather — including monthly rainfall, sunshine hours, and humidity — visit our Diamond climate page.
