Tuesday, April 1, 2014

Aruba Weather Q & A

Aruba Bound
Q. Is Aruba windy?
A. This can be true at especially windy times of the year such as June, but mostly depends on where you stay since all hotels are on the leeward side of the island and the hotel buildings for the most part block you on the beach from the wind coming across the island. Average wind speed in June is 20 m.p.h. and in October and November it is only 13 m.p.h.

Q. Are there hurricanes in Aruba?
A. Hurricane climatology of the Netherlands Antilles and Aruba
"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 nihil, 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 23/15:30 UTC with 995.4 millibars. A ship sailing south of Curaçao reported a lowest pressure of 988.8 millibars.

In this context the most significant events in the past few years were related to tropical storms Joan in 1988, tropical storm Bret in 1993 and tropical storm Cesar in 1996. Tropical storm Joan, which past just south of the islands on October 16, 1988, caused an estimated structural damage of approximately US$1.5 million, mainly by blown off roofs and by rough seas pounding exposed harbor and beach facilities."
Q. Does Aruba have a rainy season?
A. Predicting rainfall in the Dutch Caribbean, 17 December 2001
The leeward islands of the Dutch Antilles (Aruba, Curacao and Bonaire) have a semi-arid climate (yearly precipitation is about 550 mm [22.7 in.] per year). This is due to an extension of the Azores high and locally it is also connected with an upwelling zone with colder sea surface temperature (SST) along the east-west Venezuelan coast caused by the easterly trade winds (Lahey, 1958; Trewartha, 1981). The influence of the mainland 60 km away is large: during the rain season most precipitation is late at night and in the early morning, opposite to the usual tropical pattern, which exists on the mainland. This is caused by the sea-continent breeze...Traditionally, the year is divided in three 4 - month seasons.
Oct - Jan is the rain season,
Feb - May the dry season and
Jun - Sep bring the small rains. .."
Q. What are Aruba's average temperatures?
Average low temperature 76 F.
Average high temperature 87 F.
Average temperature 80 F.

Average high temperature 90 F.
Average low temperature 80 F.
Average water temperature 82 F.

Aruba Climatological Table Is Aruba outside of the hurricane belt?