Product Description. 1  Flex Seal as seen on TV is a rubberized leak sealer that seeps into cracks and holes to seal out air and moisture. When dry, Flex Seal, as seen on TV, is a long-lasting, watertight, paintable, flexible rubber coating that won't sag, drip, crack or peel. It seals out water and lasts for years.
The average high in Antigua is 31ÂºC in September so itâs perfect if you love the heat. Temperatures only drop to 25ÂºC at night so you wonât need to bring many warm clothes. The sea temperatureâs 29ÂºC, so itâs lovely for swimming, while humidityâs very high.
Weather lowdown. On average, January is the coldest month of the year for Antigua. At this time of year, the average temperature for the island is 25.5Â°C (created by highs of 28Â°C and lows of 23Â°C) â a temperature which doesnât vary at all as the month progresses.he average sea temperature in Antigua remains consistently warm throughout the year. In January, itâs 27Â°C which is certainly warm enough to go swimming. Thanks to its tropical climate, Antigua is also relatively humid all-year-round.