Weather in Roseau

Stay up to date with the latest weather conditions in the city of Roseau. In this section, you will find current data, forecasts, and useful weather charts to help you plan your time in Dominica.

The climate in Roseau, the capital of Dominica, is characterised as tropical, with warm and fairly stable weather throughout the year. Average annual temperatures fluctuate only slightly, remaining comfortable for visiting in any season, averaging between 24°C and 27°C. You will not encounter sharp temperature changes here, which makes trip planning quite predictable from a weather perspective.

Although Roseau has no distinct seasons of temperature change, periods with varying amounts of rainfall can be distinguished. From July to November, there is a slight increase in the number of rainy days and total rainfall (up to 4-5 mm per month), which can be described as the wetter season. The driest months, with the least amount of precipitation (1-2 mm per month) and rainy days (about 12-15 days), are usually March, April, and May. It is important to note that even during the "dry" months, rain is not uncommon, but it tends to be short-lived.

Overall, the weather in Roseau is distinguished by high humidity. Despite the fact that the total monthly rainfall might seem low, it rains quite often, but usually, it is light, brief, and refreshing. This contributes to maintaining the lush tropical vegetation for which Dominica is famous. Travellers should be prepared for the fact that even on a sunny day, a short shower may pass, after which the sun will shine again.

The temperature regime in Roseau is remarkably stable throughout the year, making it attractive to visit in any season. The annual temperature range here is quite narrow: average monthly minimum temperatures range from 23.3°C (in February) to 25.8°C (in September), and average monthly maximums range from 25.0°C (in February) to 27.7°C (in September). The average air temperature during the year varies slightly, staying within the range of 24.2°C to 26.7°C, ensuring constantly warm weather.

The hottest period in Roseau is usually the months from June to October, peaking in September, when the average temperature reaches 26.7°C. At this time, daytime highs average 27.7°C, and nights remain very warm, with temperatures around 25.8°C. This period generally coincides with the rainy season, so the heat is often accompanied by high humidity. The "coolest" months are considered to be January, February, and March. February stands out as the coolest month with an average temperature of 24.2°C, daytime highs of around 25.0°C, and nighttime lows of around 23.3°C. However, even in these months, the weather remains very warm and comfortable, without a hint of real cold.

One of the characteristic features of the Roseau climate is the minimal difference between day and night temperatures. Throughout the year, daily temperature fluctuations are very small: the difference between the average monthly maximum and minimum temperature rarely exceeds 1.5-1.9°C. This means that nights here are almost as warm as the days, without sharp drops in temperature. Such stability makes the temperature background in Roseau very predictable and pleasant for those looking for consistent tropical warmth.

Rainfall in Roseau is an integral part of the local climate, with its distribution throughout the year having its own peculiarities, although rain is possible in any month. In general, Roseau is characterised by frequent precipitation, but its intensity, judging by the provided monthly average data, can vary. Snow, given the tropical location of Dominica and warm temperatures year-round, does not fall here.

A wetter period can be distinguished, which usually falls on the months from July to November. The peak of precipitation in terms of quantity occurs in September and October, when an average of 5 mm is recorded. However, in terms of rain frequency, July stands out, counting an average of 23 rainy days, followed by August with 22 rainy days. In October and November, a high frequency of precipitation is also observed – about 21 rainy days in each. This means that in the second half of summer and autumn, the probability of catching rain is quite high.

A relatively drier season is observed in spring. The "driest" months, both in terms of rainfall amount and the number of rainy days, are March and May. During these months, only 1 mm of precipitation falls. May is also distinguished by the fewest number of rainy days in the year – on average 12 days. In March and April, the number of rainy days is about 15. The winter months (January, February, December) and the beginning of summer (June) occupy an intermediate position with 2 mm of precipitation and from 16 to 20 rainy days, which also indicates regular, albeit not the most abundant, rains.

When planning a trip to Roseau, remember that a warm tropical climate awaits you all year round. The average temperature stays in a comfortable range of 24-27°C, so the basis of your wardrobe should be light, breathable clothing made from natural fabrics such as cotton or linen. Do not forget swimwear to enjoy the Caribbean Sea, as well as sunscreen with a high SPF, a hat, and sunglasses for protection from the active tropical sun.

Despite the fact that the total amount of precipitation in Roseau may seem small, rain here is a frequent phenomenon, especially in the period from July to November. Therefore, a light raincoat or a compact umbrella will become your faithful companions on almost any day. Pay attention to the choice of footwear: comfortable sandals or quick-drying trainers for walking around the city and its surroundings will be very useful. It might also be worth thinking about insect repellent, especially for evening walks.

Although there are no sharp temperature changes in Roseau, the principle of layering can be useful. A light cardigan or shawl will protect against the evening cool by the water or in air-conditioned rooms. Clothing that dries quickly will be especially practical, given the high humidity and the likelihood of getting caught in a short tropical downpour. In general, your luggage should be focused on comfort in warm and humid conditions so that your journey through the capital of Dominica is as pleasant as possible.