Castries Temperatures: Monthly Averages and Year-Round Insights
On this page, we’ll explore Castries’s temperature statistics in detail, including day and night variations and monthly averages. We’ll also compare the annual temperature to other cities in Saint Lucia.
Monthly Temperature Averages
The temperature in Castries changes very little across the seasons, maintaining a similar climate throughout the year. Typically, maximum daytime temperatures range from a very warm 31°C in September to a warm 29°C in the coolest month, February. Nights are cooler, with temperatures generally dropping to 24°C, particularly during the colder months.
The chart below illustrates the average maximum day and minimum night temperatures in Castries by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM. During this time the sun's heating effect is the strongest. September, the city’s warmest month receives 238 hours of sunshine.
The chart below shows the average temperature throughout the year:
February, the city’s coldest month, receives about 36 mm of rainfall spread over roughly 13 days. For more information, please visit our Castries Precipitation page.
Annual Temperatures in Saint Lucia Compared
The map below shows the annual temperature across Saint Lucia. You can also select the different months in case you are interested in a specific month.
very warm
warm
pleasant
moderate
cold
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Castries Temperatures Compared World Wide
Castries’s average annual maximum temperature is 30°C. Let’s compare this with some popular tourist destinations:
In Lisbon, Portugal, the average annual temperature is 21°C, offering warm summers and mild, rainy winters.
In contrast, in ReykjavÃk, Iceland, the average annual temperature is significantly lower at 9°C, with mild summers and cold winters.
Osaka, Japan, offers a similar climate to Tokyo, with an average annual temperature of 22°C.
Melbourne, Australia, has a slightly cooler climate, with an average annual temperature of 20°C.
How does the temperature feel?
Humidity is an essential factor in how you experience temperature. When a warm period is accompanied by high humidity, it results in a higher perceived temperature. This is especially true when temperatures exceed 25°C, as it can cause greater discomfort.
In Castries, during the coolest month, February, you will experience 79% humidity, which is considered high. This is accompanied by an average maximum temperature of 29°C. In the warmest month, September, the humidity is 81% combined with an average maximum temperature of 31°C, which creates a very high-feel temperature. Explore our detailed page on humidity levels for further details.
How are these Temperatures Measured?
Generally, temperature data depicting climate is usually given over a 30-year average in order to reduce short-term fluctuations and reveal better long-term trends in climate conditions.
This temperature data is taken from land-based thermometers, ocean buoys, ships, and satellites. These measurements are transmitted to weather stations and climate centers around the globe where they are processed, averaged, and analyzed in order to monitor the trends and create climate models.
Sea vs. Land Temperatures
The influence of nearby oceans or large water bodies significantly affects local temperatures:
- Ocean Influence: Coastal regions tend to have more stable temperatures, as large bodies of water absorb and release heat slowly. This often results in milder winters and cooler summers compared to inland areas.
- Continental Climates: Landmasses well away from large bodies of water tend to show greater extremes in temperature, having hotter summers and colder winters because of the absence of water as a moderating influence.
For more detailed information about Castries’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Castries climate page.
Current temperature in Castries
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