IMPORTANT
This Caribbean Weather Watch update combines automated forecast-model guidance with the latest available official-source information. It is not an official warning or emergency instruction. Always follow local authorities and open the linked official sources for complete notices.
REPORT ISSUED
August 21, 2026 at 7:40 AM AST
MORNING UPDATE
Highest automated model signals for the next 24 hours: wind Extreme, thunder Extreme. Check official notices before weather-sensitive or marine decisions.
TODAY'S ALERT LEVEL
Major model status. One or more automated model indicators are Extreme for the next 24 hours: wind, thunder. Immediately check official warnings and instructions.
WHAT MATTERS MOST TODAY
Highest automated model signals for the next 24 hours: wind Extreme, thunder Extreme. Check official notices before weather-sensitive or marine decisions.
CHANGE SINCE LAST UPDATE
No meaningful model-risk category change since the previous scheduled refresh.
TODAY'S RISK INDEX
- Heat: Moderate (automated model guidance)
- UV: High (automated model guidance)
- Marine: High (automated model guidance)
- Wind: Extreme (automated model guidance)
- Rain/flooding: High (automated model guidance)
- Thunder: Extreme (automated model guidance)
- Saharan dust: Low (automated model guidance)
- Tropical: Moderate (automated model guidance)
- Marine life: Low (published information; not calculated from the weather model)
ABC ISLANDS OVERVIEW
The next-24-hour overview combines the latest available forecast, marine and air-quality model data for Aruba, Bonaire and Curaçao. Conditions can vary by island and coast. Review all official notices before publication.
ARUBA
Partly cloudy
Temperature: high near 30°C / 87°F and low near 28°C / 82°F.
Rain: model probability up to 82% during the next 24 hours.
Thunder: Possible; check the official island forecast for thunder statements.
Wind: E around 32 km/h, with gusts up to 73 km/h.
Marine: combined waves up to 1.5 m / 5.1 ft; swell up to 1.0 m.
Visibility: above-water atmospheric visibility may fall to about 7.4 km.
UV: daily maximum model index 8.6.
Important: Check the latest official island and marine forecast before making weather-sensitive decisions.
Official forecast cross-check (Departamento Meteorologico Aruba): Forecast and Advisories Forecast details. WEATHER FORECAST VALID UNTIL FRIDAY, AUGUST 21, 2026, 6:00 PM. Partly cloudy with a slight chance of a shower especially during the early morning..
Official marine cross-check (Departamento Meteorologico Aruba): Marine Forecast valid from 21/08/2026 to 22/08/2026 . …CARIBBEAN SEA & LOCAL REGION…. wave can induce a few brief showers during the.
CURAçAO
Overcast
Temperature: high near 31°C / 87°F and low near 27°C / 80°F.
Rain: model probability up to 70% during the next 24 hours.
Thunder: Possible; check the official island forecast for thunder statements.
Wind: E around 23 km/h, with gusts up to 71 km/h.
Marine: combined waves up to 1.3 m / 4.1 ft; swell up to 0.8 m.
Visibility: above-water atmospheric visibility may fall to about 5.6 km.
UV: daily maximum model index 8.4.
Important: Check the latest official island and marine forecast before making weather-sensitive decisions.
Official forecast cross-check (Meteorological Department Curaçao): 5 Day forecast Papiamentu | Nederlands . "WATCHING THE WEATHER TO PROTECT LIFE AND PROPERTY". Current weather/forecasts .
Official marine cross-check (Meteorological Department Curaçao): Marine forecast Papiamentu | Nederlands . MARINE FORECAST FOR SEAS AROUND CURAÇAO:. The wind may occasionally.
BONAIRE
Partly cloudy
Temperature: high near 30°C / 86°F and low near 26°C / 79°F.
Rain: model probability up to 94% during the next 24 hours.
Thunder: Possible; check the official island forecast for thunder statements.
Wind: E around 28 km/h, with gusts up to 62 km/h.
Marine: combined waves up to 1.2 m / 3.9 ft; swell up to 0.7 m.
Visibility: above-water atmospheric visibility may fall to about 4.3 km.
UV: daily maximum model index 8.2.
Important: Check the latest official island and marine forecast before making weather-sensitive decisions.
Official forecast cross-check (KNMI Caribbean Netherlands): Weather forecast for Bonaire. Friday 21 until Saturday 22 August 2026 Chance of a shower, possibly with thunder Sunny periods and mainly during the night and morning chance of a shower, possibly with thunder. High temperatures will be 33°C, low temperatures around 28°C.
Official marine cross-check (KNMI Caribbean Netherlands): Winds will be easterly and moderate to fresh, force 4-5.Waves: Moderate, 5-7 ft. During the hurricane season* KNMI is monitoring the Atlantic in close cooperation with the National Hurricane Center (NHC). Temperature282828282828 Rainfall (mm)0/40/40/30/20/10/2 Rainfall (%)707050403050 Sunshine (%)404060607070 Wind E 4 E 4 E 4 E 4 E 4 E 4 .
MARINE, BEACH + DIVE OUTLOOK
- Overall: Next-24-hour model guidance: combined seas may reach 1.5 m, swell 1.0 m and gusts 73 km/h. Conditions can vary significantly by coast.
- Beach and swimming — Hazardous: Choose a sheltered beach with calmer water. Waves may reach approximately 1.5 m in exposed areas. Check local conditions before entering the sea and leave the water if thunder develops.
- Diving and snorkeling — Hazardous: Sea-surface temperature is approximately 29.0°C. Wind, waves and currents may vary by location. Check conditions at the site before entering and avoid exposed locations when conditions are rough.
- Exposed coasts — Difficult: Exposed coasts may experience waves near 1.5 m and gusts near 73 km/h. Avoid wave-washed rocks and unsheltered entries when conditions deteriorate.
- Small craft — Hazardous: Gusty winds and choppy seas may create difficult conditions for small vessels. Check the latest official marine forecast before departure.
UV + HEAT SAFETY
- Use broad-spectrum SPF 30–50+, sunglasses and a hat.
- Drink water regularly and limit prolonged exposure during peak midday heat and UV.
- Children, older adults, outdoor workers and pets need extra heat protection.
TROPICAL WEATHER OUTLOOK
Local automated tropical model signal: Moderate.
National Hurricane Center summary: 000ABNT20 KNHC 211119TWOAT Tropical Weather OutlookNWS National Hurricane Center Miami FL800 AM EDT Fri Aug 21 2026For the North Atlantic…Caribbean Sea and the Gulf of America:Northeastern Atlantic:A non-tropical area of low pressure has developed over the northeastern Atlantic several hundred miles north-northeast of the Azores. This system could acquire some subtropical or tropical characteristics on Saturday or early Sunday while it moves east-southeastward at 10 to 15 mph toward Portugal…
Confirm the full official Atlantic outlook before publication.
INFORMATION VERIFIED
Model data updated 7:39 AM AST. Review official sources for watches, warnings and instructions.
NEXT UPDATE
17:30 AST today, or sooner if conditions change significantly.
OFFICIAL SOURCES
- Departamento Meteorologico Aruba — https://www.meteo.aw/
- KNMI Caribbean Netherlands — https://www.knmidc.org/
- Meteorological Department Curaçao — https://www.meteo.cw/
- National Hurricane Center — https://www.nhc.noaa.gov/
DISCLAIMER
Weather values displayed on this website are forecast-model guidance and may change. They do not constitute an official weather warning, marine advisory or emergency instruction. Always verify important decisions with the official meteorological authorities for Aruba, Curaçao and Bonaire and follow all instructions from local authorities.