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
September 11, 2026 at 8:00 AM AST
MORNING UPDATE
Highest automated model signals for the next 24 hours: UV High, wind High, rain/flooding High, thunder High. Check official notices before weather-sensitive or marine decisions.
TODAY'S ALERT LEVEL
Significant model status. One or more automated model indicators are High for the next 24 hours: UV, wind, rain/flooding, thunder. Review official information before weather-sensitive or marine activities.
WHAT MATTERS MOST TODAY
Highest automated model signals for the next 24 hours: UV High, wind High, rain/flooding High, thunder High. 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: Moderate (automated model guidance)
- Wind: High (automated model guidance)
- Rain/flooding: High (automated model guidance)
- Thunder: High (automated model guidance)
- Saharan dust: Moderate (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
Overcast
Temperature: high near 31°C / 88°F and low near 28°C / 82°F.
Rain: model probability up to 76% during the next 24 hours.
Thunder: Possible; check the official island forecast for thunder statements.
Wind: ESE around 31 km/h, with gusts up to 67 km/h.
Marine: combined waves up to 1.4 m / 4.7 ft; swell up to 0.9 m.
Visibility: above-water atmospheric visibility may fall to about 5.1 km.
UV: daily maximum model index 8.5.
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, SEPTEMBER 11, 2026, 6:00 PM. Partly cloudy and predominantly dry with a slight chance of a shower..
Official marine cross-check (Departamento Meteorologico Aruba): Marine Forecast valid from 11/09/2026 to 12/09/2026 . …CARIBBEAN SEA & LOCAL REGION…. Smooth to slight seas are noted on the .
CURAçAO
Partly cloudy
Temperature: high near 32°C / 89°F and low near 28°C / 82°F.
Rain: model probability up to 47% during the next 24 hours.
Thunder: Possible; check the official island forecast for thunder statements.
Wind: ESE around 27 km/h, with gusts up to 66 km/h.
Marine: combined waves up to 1.2 m / 4.1 ft; swell up to 0.9 m.
Visibility: above-water atmospheric visibility may fall to about 5.3 km.
UV: daily maximum model index 9.0.
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:. Moisture related to a passing tropical wave continues to move over the ABC.
BONAIRE
Partly cloudy
Temperature: high near 31°C / 88°F and low near 28°C / 82°F.
Rain: model probability up to 76% during the next 24 hours.
Thunder: Possible; check the official island forecast for thunder statements.
Wind: E around 30 km/h, with gusts up to 60 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 5.0 km.
UV: daily maximum model index 8.9.
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 11 until Saturday 12 September 2026 Small risk of an occasional shower Partly cloudy and a small chance of an occasional shower. High temperatures will be 33°C, low temperatures around 28°C.
Official marine cross-check (KNMI Caribbean Netherlands): Winds will be easterly and mainly 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)1/31/32/51/31/31/3 Rainfall (%)306070303030 Sunshine (%)405040303030 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 1.4 m, swell 0.9 m and gusts 67 km/h. Conditions can vary significantly by coast.
- Beach and swimming — Difficult: Choose a sheltered beach with calmer water. Waves may reach approximately 1.4 m in exposed areas. Check local conditions before entering the sea and leave the water if thunder develops.
- Diving and snorkeling — Difficult: Sea-surface temperature is approximately 29.3°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 1.4 m and gusts near 67 km/h. Avoid wave-washed rocks and unsheltered entries when conditions deteriorate.
- Small craft — Difficult: 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.
ENVIRONMENT & GEOHAZARD STATUS
Fire/Hotspots: 7 ABC-relevant satellite thermal anomaly detection(s), unconfirmed Volcanoes: OFFICIAL VOLCANO LEVEL REQUIRES AWARENESS
DETAILED CWW MONITORING
- Environment — https://www.caribbeanweatherwatch.com/environment/
- Geohazards — https://www.caribbeanweatherwatch.com/geohazards/
TROPICAL WEATHER OUTLOOK
Local automated tropical model signal: Moderate.
National Hurricane Center summary: 000ABNT20 KNHC 111120TWOAT Tropical Weather OutlookNWS National Hurricane Center Miami FL800 AM EDT Fri Sep 11 2026For the North Atlantic…Caribbean Sea and the Gulf of America:Tropical cyclone formation is not expected during the next 7 days.$$Forecaster Hagen
Confirm the full official Atlantic outlook before publication.
INFORMATION VERIFIED
Model data updated 8:00 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/
- USF Sargassum Watch System — https://optics.marine.usf.edu/projects/saws.html
- NOAA Coral Reef Watch — https://coralreefwatch.noaa.gov/
- Caribbean Regional Climate Centre (CIMH/WMO RCC) — https://rcc.cimh.edu.bb/
- NASA FIRMS — https://firms.modaps.eosdis.nasa.gov/
- U.S. Geological Survey — https://earthquake.usgs.gov/
- U.S. Tsunami Warning System — https://www.tsunami.gov/
- UWI Seismic Research Centre — https://uwiseismic.com/
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.