Weather in St. Lucia in August
Country-wide climate normals across 15 cities in St. Lucia.
How Hot Is St. Lucia in August?
St. Lucia bakes evenly in August — highs around 29°C are typical from Anse Ger all the way to Balata, with very little regional variation. Lows sit around 27°C even overnight, and the country's small geographic footprint means there are no significant climate pockets. Expect uniform heat day and night.
Sunshine in St. Lucia in August
Persistent cloud and grey skies define St. Lucia's August: about 1.2h of sun a day in Gros Islet. Daylight is in short supply too, running from 5:50 am to 6:25 pm, and most regions of the country see similar overcast conditions. Bright stretches are uncommon and brief.
Does It Rain In St. Lucia In August?
St. Lucia's August is wet across most regions: 145mm in Gros Islet across 22 days, with rain falling on most days of the month. Coastal and highland regions can see significantly more, while interior regions may stay slightly drier. Sunny stretches are brief and uncommon.
Is St. Lucia Humid In August?
Heavy oppressive humidity covers St. Lucia in August: 77% on average in Gros Islet, and similar saturating conditions exist nationwide. The air feels thick and heavy from sunrise to sundown, with little overnight respite. Coastal and tropical regions feel especially stifling.
Wind In St. Lucia In August
Persistent breeze shapes St. Lucia's August: 25 kph in Gros Islet, with consistent wind across the country. The conditions are ideal for sailing and other wind sports, but can be disruptive for fine outdoor work.
Cloud Cover In St. Lucia In August
Heavy overcast covers St. Lucia in August: 77% cloud cover in Gros Islet, with similar grey conditions in most regions. Direct sun is rare, and the pattern is persistent across the country. Coastal and northern regions feel especially heavy.