"Rainy season" is the end of October to mid-January. Rain falls during this period mainly in the form of showers, many times at night. We spent a week in Aruba during one September and had one day of clouds and showers during the entire week. Last December in 12 nights we had one day of off and one showers, one day mostly cloudy and showers most mornings. The showers with the exception of what I mentioned above, cleared by 10 a.m. and the rest of the day the skies were blue and mostly clear.
Try instead focusing on the site at http://www.weather.an/ This is the weather service for Aruba and the Netherlands Antillies.
http://www.weather.an/current/index.asp?stationid=TNCC current weather
http://www.weather.an/forecast/index.asp ABC island forecast (never a long term forecast)
http://www.weather.an/climate/aru.climsum.htm climatology summary
I have translated some of it over to fahrenheit
Average high temperature 90 F.
Average low temperature 80 F.
Average temperature 84 F.
Average water temperature 83 F.
Average rainfall 1.40 inches (20.3 inches annual)
Average windspeed 15 mph
http://www.weather.an/reports/documents/Summary2007.pdf Climatology summary for 2007
The total rainfall, recorded at the Queen Beatrix Airport, for the year 2007 was, with 501.6 mm [19.75 inches],
23% above average (409 mm [16 inches]). The wettest month was December with a total rainfall of 191.4 mm [7.5 inches].
The 24-hour maximum rainfall of 38.8 mm [1.53 inches], was recorded on December 5.
The number of days with precipitation greater than or equal to 1.0 mm [.04 inches] was 60 days (normal 62)."
http://www.weather.an/reports/documents/ManualTropicalCyclonesNAA.pdf Tropical Cyclone Management in the Netherlands Antilles and Aruba
http://www.weather.an/reports/docume...icalStorms.pdf Hurricanes and Tropical Storms in the Netherlands Antilles and Aruba
Hurricane climatology of the Netherlands Antilles and Aruba p. 17
"The Leeward (ABC) Islands
Aruba, Bonaire and Curaçao are on the southern fringes of the hurricane belt. They are not outside the hurricane belt, as many consider. History learns that roughly once every 100 years considerable damage is experienced by tropical cyclones passing over or just south of the islands. Although the hurricane experience level for the islands may be regarded as very small, well known is the minor hurricane which passed just south of Curaçao on September 23, 1877 causing an estimated structural damage of US$ 2 million, mainly to the coastal section of Willemstad. A nunnery was completely washed away (remnants still visible with low tide), many ships were lost and at least 70 persons drowned. The lowest barometer reading at Willemstad was observed at 15:30 UTC on September 23 (UTC = local time + four hours in Eastern Caribbean Area) with 995.4 millibars. A ship sailing south of Curaçao reported a lowest pressure of 988.8 millibars.
On the average, once every four years a tropical cyclone occurs within a radius of 150 kilometers, but mostly passing to the north of the islands without causing serious bad weather. Even the immediate effects of major hurricane Hazel, of which the center passed approximately 90 kilometers to the north on October 7, 1954, with maximum sustained winds near the center of 190 km/h, were confined to observed maximum winds of 50 km/h with gusts to 90 km/h, and the damage, an estimated US$ 350.000,-, resulted mainly from flash floods due to heavy rainfall (48 hours averages: Aruba approx. 250 mm, Bonaire and Curaçao approx. 125 mm)."
Go and enjoy without any frets over the weather.