St. Kitts and Nevis Meteorological Forecast

This detailed weather forecast pertains to a 24-hour period commencing on December 29, 2024, and extending until 8:00 am on December 30, 2024. The forecast anticipates the influence of a stable and cool air mass originating from the north, which is expected to suppress significant shower activity across the islands during this timeframe. This air mass will be the dominant factor shaping the weather conditions experienced throughout the forecast period. The predicted temperatures will range from a high of 30°C (86°F) to a low of 20°C (68°F), indicating a moderately warm day followed by a cooler night.

The daytime weather on December 29th is projected to be partly sunny, with only a slight chance (20%) of brief, light showers. The presence of the cool air mass will likely limit the development of substantial cloud cover and precipitation. This suggests that for most of the day, sunshine will prevail, interspersed with periods of partial cloud cover. The minimal chance of rain indicates that any showers that do occur will be short-lived and light in intensity.

As night falls on December 29th, the weather is expected to transition to fair to partly cloudy conditions, with the temperature decreasing to a cool 20°C (68°F). The chance of brief, passing showers increases slightly to a moderate 40%. While the cool air mass will still exert its influence, the slightly higher probability of showers suggests some increased atmospheric instability overnight. However, any showers are expected to be transient and of short duration.

Wind conditions are predicted to be predominantly from the north-northeast, blowing at speeds between 11 and 26 km/h (7 to 16 mph). These moderate winds will contribute to the overall cooler temperatures by advecting the colder air mass into the region. The forecast also mentions periods of lighter, variable winds, suggesting that the wind direction and speed may fluctuate at times.

The marine forecast indicates significant wave activity, with northerly swells reaching heights of 1.8 to 2.8 meters (6 to 9 feet). This has prompted the issuance of a high surf warning, cautioning against engaging in water activities, particularly along exposed coastlines. The northerly swells are likely generated by distant weather systems and propagate across the ocean, impacting the coastal areas.

The sunset on December 29th is expected at 5:47 pm, marking the end of daylight hours. Sunrise on December 30th is predicted to occur at 6:40 am, heralding the start of a new day. These timings reflect the typical diurnal cycle for this time of year.

In summary, the forecast predicts a period of relatively stable and cool weather influenced by a northerly air mass. While a slight chance of brief showers exists during the day and a moderate chance overnight, the overall conditions are expected to remain predominantly fair to partly cloudy. The moderate north-northeast winds will contribute to the cooler temperatures, while the significant northerly swells generate hazardous surf conditions, necessitating a high surf warning.