St. Kitts and Nevis Meteorological Forecast

This detailed weather forecast pertains to the Leeward Islands and covers a period from the evening of August 22, 2025, to the evening of August 23, 2025. The forecast highlights the transitional nature of the weather, moving from conditions influenced by a passing tropical wave to a more stable pattern dominated by a building ridge. The dominant factor in the forecast is the lingering moisture and instability left in the wake of the tropical wave. This residual moisture interacts with atmospheric conditions to create a moderate chance of showers, particularly during the evening of August 22nd. The probability of these showers is estimated at 60%, with a smaller 20% chance of thunderstorms accompanying the precipitation.

As the tropical wave continues its westward trajectory, the forecast predicts a shift in the atmospheric dynamics. A high-pressure ridge is expected to build over the Leeward Islands by the early morning of August 23rd. This ridge will effectively suppress atmospheric instability, leading to a decrease in the likelihood of showers. The forecast anticipates partly cloudy conditions for Saturday, with a reduced 40% chance of lingering showers, primarily during the morning hours. This signifies a transition to more stable and drier conditions as the influence of the tropical wave diminishes.

The temperature forecast provides a comfortable range for the period, with a predicted high of 31°C (88°F) and a low of 25°C (77°F). This relatively moderate temperature range further suggests the absence of extreme weather conditions. The wind forecast anticipates southeasterly winds ranging from 9 to 24 km/h (6-15 mph) during the night of August 22nd. These winds are expected to shift to a more easterly direction by August 23rd, aligning with the establishment of the high-pressure ridge. The relatively light to moderate wind speeds contribute to the overall calm weather picture.

The marine forecast predicts calm seas with heights ranging from 0.9 to 1.2 meters (3 to 4 feet). This is consistent with the anticipated weather conditions and the building high-pressure ridge, which typically leads to calmer seas. The combination of moderate temperatures, light to moderate winds, and calm seas paints a picture of generally pleasant weather conditions for maritime activities. Finally, the forecast provides sunrise and sunset times for August 23rd, with sunrise at 5:55 am and sunset at 6:32 pm. These times offer approximately 12 hours and 37 minutes of daylight.

In summary, the forecast for the Leeward Islands indicates a transition from a period of moderate shower activity associated with a passing tropical wave to drier and more stable conditions as a high-pressure ridge builds in. The evening of August 22nd carries a 60% chance of showers and a 20% chance of thunderstorms. This probability decreases to 40% for the morning of August 23rd, mainly during the morning hours. Temperatures are expected to remain within a comfortable range, with winds shifting from southeasterly to easterly and calm seas prevailing.

The forecast emphasizes the influence of the departing tropical wave and the subsequent establishment of the high-pressure ridge as the key drivers of the weather pattern. The shift from a moderate chance of showers to partly cloudy conditions with a lower chance of lingering morning showers reflects this transition. The forecast provides a comprehensive overview of the expected weather conditions, enabling residents and visitors to plan their activities accordingly. The information encompasses various aspects of the weather, including temperature, precipitation, wind, sea conditions, and daylight hours, offering a complete picture of the anticipated meteorological situation.