St Kitts and Nevis Weather Forecast

This extended weather forecast pertains to a specific geographical area, likely an island or archipelago, for a 24-hour period commencing on August 21, 2025, and concluding at 8:00 PM on August 22, 2025. The forecast highlights the influence of an active tropical wave, which is predicted to bring substantial moisture and atmospheric instability to the region, leading to a significant increase in shower and thunderstorm activity. This activity is expected to be frequent and widespread, affecting not only the islands themselves but also the surrounding waters. The potential for heavy rainfall is emphasized, with accumulations possibly exceeding 25.4mm (1 inch) in certain localities.

The forecast details the expected weather conditions for both the night of August 21st and the day of August 22nd. For the night of the 21st, the prediction calls for mostly cloudy skies with a high probability (80%) of showers. These showers are anticipated to range in intensity from moderate to locally heavy, with a moderate chance of isolated thunderstorms also developing. This indicates a period of consistent rainfall with the possibility of more intense, localized downpours and thunderstorm activity.

The forecast for August 22nd anticipates cloudy to overcast conditions with periods of numerous showers and thunderstorms throughout the day. This suggests that the rainfall activity will not be continuous but will occur in distinct periods, potentially with varying intensity. The combination of cloudy skies and numerous showers and thunderstorms points toward a day dominated by unsettled weather.

The forecast includes information about wind conditions, predicting northeast winds with speeds ranging from 19 to 33 km/h (12 to 21 mph). Gusts are expected to reach as high as 50 km/h (31 mph), especially during showers, over open water, and in elevated areas. This suggests that wind speeds will be generally moderate but can become significantly stronger in specific circumstances, particularly during periods of intensified rainfall and in geographically vulnerable locations.

Sea conditions are also addressed in the forecast, with waves predicted to reach heights of 1 to 1.5 meters (3 to 5 feet). This indicates relatively calm sea conditions, though increasing wind speeds during showers could contribute to choppier waters. The combination of wind and sea conditions suggests that small craft advisories might be necessary depending on the specific location and vulnerability to changing weather patterns.

Finally, the forecast provides sunrise and sunset times for August 22nd, with sunrise at 5:55 AM and sunset at 6:32 PM. This information, while not directly related to the prevailing weather conditions, provides context for the duration of daylight hours during the forecast period. The inclusion of sunrise and sunset times can be useful for planning outdoor activities, though the predicted weather conditions suggest that such activities may be significantly impacted by the anticipated rainfall and thunderstorms.

In summary, the forecast paints a picture of unsettled weather dominated by the influence of a tropical wave. This wave is expected to bring considerable moisture and instability to the region, resulting in frequent showers and thunderstorms, potentially heavy rainfall, and moderately strong winds, especially during the periods of intensified rainfall. The forecast underscores the likelihood of disrupted outdoor activities and potentially hazardous conditions for those venturing out on the water or in exposed areas. While the sea state is predicted to be relatively calm, the possibility of increased wave height due to gusty winds should be considered. The forecast emphasizes the need for preparedness and awareness of changing weather conditions throughout the specified period.