St Kitts and Nevis Meteorological Forecast

This weather forecast pertains to a tropical island region and covers the period from September 3, 2025, to 8:00 PM on September 4, 2025. The forecast highlights the influence of a tropical wave interacting with dry air, leading to a moderate chance of showers. Temperatures are expected to range from a high of 32°C (90°F) to a low of 26°C (79°F), indicating a warm tropical climate. The forecast details the expected weather conditions for both the night of September 3rd and the day of September 4th, including cloud cover, precipitation chances, wind speed, and sea state. Additionally, it provides sunrise and sunset times for September 4th.

The primary weather event anticipated is the arrival of a tropical wave, a common feature in tropical regions. These waves are elongated areas of relatively low air pressure that move westward across the tropics. They often carry increased moisture and instability, creating conditions favorable for shower and thunderstorm development. However, in this specific case, the presence of dry air in the surrounding atmosphere is expected to mitigate the rainfall potential of the tropical wave. This dry air will likely inhibit the vertical development of clouds necessary for significant precipitation, resulting in only brief showers. Therefore, while the tropical wave introduces the possibility of rain, the overall impact is anticipated to be limited.

The forecast for the night of September 3rd calls for partly cloudy skies with a 60% chance of brief overnight showers. This indicates that while some areas may experience rainfall, it is not expected to be widespread or long-lasting. The “brief” descriptor emphasizes the short duration of the anticipated showers. The term “partly cloudy” suggests that there will be a mixture of clear and cloud-covered areas during the night.

For September 4th, the forecast predicts partly cloudy skies with a slightly lower 40% chance of brief passing showers. This decrease in rain probability suggests that the influence of the tropical wave, coupled with the persistent dry air, will further diminish throughout the day. Similar to the night forecast, the term “brief passing showers” indicates short-duration rainfall events that are likely to be localized and scattered across the region. The “partly cloudy” condition suggests that periods of sunshine will be interspersed with cloud cover.

The wind forecast indicates easterly winds at 13 to 26 km/h (8 to 16 mph), which are expected to diminish in speed overnight. Easterly winds signify that the wind will be blowing from the east towards the west. The decrease in wind speed overnight suggests a calming of atmospheric conditions, possibly contributing to the reduced chance of showers on September 4th.

The sea state is forecast to be relatively calm, with wave heights ranging from 0.9 to 1.2 meters (3 to 4 feet). This calm sea state is consistent with the moderate wind speeds predicted and suggests generally favorable conditions for marine activities.

Finally, the forecast provides the sunrise and sunset times for September 4th as 5:57 AM and 6:23 PM, respectively. These times indicate a roughly equal duration of daylight and darkness, typical for locations near the equator around the time of the equinoxes. The information regarding sunrise and sunset times is helpful for planning outdoor activities and understanding the daily cycle of solar radiation.