6:00 Pm Weather Report, 18th September 2026.

6:00 pm Weather Report
Date: 18th September, 2026
Forecaster: Maclean Jn Baptiste

Present weather at Hewanorra Airport is fair.
Present weather at GFL Charles Airport is fair.
Present temperature at Hewanorra Airport is 30°C or 86°F.
Today’s maximum temperature at Hewanorra Airport was 32°C or 90°F
Wind at Hewanorra Airport is blowing from the east at 15 mph or 24 km/h.
Relative humidity at Hewanorra Airport is 73%.
Rainfall in the 24-hour period that ended at 2:00 pm today:
At Hewanorra Airport: nil. At GFL Charles Airport: 1.9 mm.
Total rainfall for the month of September so far:
At Hewanorra Airport: 67.8 mm At GFL Charles Airport: 65.3 mm.

Sunrise tomorrow: 5:52 am Sunset tomorrow: 6:02 pm

FORECAST FOR SAINT LUCIA VALID FOR THE NEXT 24 HOURS
Winds will be blowing from between the east and east-southeast near 14 mph or 22 km/h, becoming lighter at times.
Weather: Fair skies, occasionally becoming cloudy with a few showers.

MARINE FORECAST FOR SEAS IN A 25 MILE OR 40 KM RADIUS FROM SAINT LUCIA
Tides for Castries Harbour: High at 8:25 pm…Low at 4:39 am.
Tides for Vieux Fort Bay: High at 9:32 pm…Low at 6:06 am.
Seas: Slight with waves 2 to 4 feet or 0.6 to 1.2 metres.

FORECAST FOR THE LESSER ANTILLES
Fair skies, becoming cloudy at times with a few showers.

TROPICAL WEATHER OUTLOOK
The Atlantic High-pressure system will maintain light to moderate easterly winds across the region, during the next few days.

Weak unstable conditions in the lower atmosphere over the Lesser Antilles, will result in a few overnight showers across some of the islands. However, generally dry and stable conditions will prevail from tomorrow.

A tropical wave located over the central Tropical Atlantic is moving westward near 15 mph or 24 km/h.