Diving Bonaire in Every Season: What Changes and What Doesn't
Bonaire sits outside the hurricane belt at 12°N latitude in the southern Caribbean. This gives it one of the most consistent climates of any dive destination in the world — and that consistency is exactly why dive-obsessed travelers keep coming back. But "consistent" doesn't mean "identical." The wind shifts, the water changes, and the island's rhythms move with the seasons in ways that matter if you're planning a trip.
Here's what each season looks like on Bonaire.
What Never Changes
Before we get into seasonal details, here's the baseline:
Water temperature: 26-29°C (79-84°F) year-round. A 3mm wetsuit is sufficient. Some divers go skin.
Air temperature: 27-33°C (81-91°F). It's desert climate with minimal rainfall.
Reef access: All 80+ shore dive sites are open year-round. The marine park never closes.
Visibility: 15-30 meters on any given day. Weather affects it less than you'd think.
Bonaire is genuinely a year-round dive destination. The question isn't "when can I dive?" — it's "what's different when I go?"
Dry Season (February to September)
Weather
This is Bonaire's "windy season" — trade winds blow consistently from the east at 15-25 knots. The air is dry, the skies are clear, and rain is rare (Bonaire gets only about 500 mm/year total). Temperatures sit at 28-33°C.
Diving Conditions
The east wind creates choppy conditions on the eastern shore (Washington Slagbaai coastline) but the west coast — where most dive sites are — stays sheltered and calm. Visibility is typically at its best during windy periods because the wind drives surface water offshore, pulling clearer water up from depth.
Best sites during dry season: All west coast sites. 1000 Steps, Hilma Hooker, and the Kralendijk waterfront sites are all sheltered.
Windsurfing
March through August is peak wind season, making Lac Bay one of the world's premier windsurfing spots. If you dive in the morning and windsurf in the afternoon, March-June is your window. Rentals from ~US$50/half-day, lessons from ~US$60.
Wildlife
Flamingo breeding season typically runs February through May. The Pekelmeer salt pans turn pink with nesting birds. You can't enter the sanctuary but roadside viewing is excellent.
Crowds & Pricing
February through April is peak tourist season. Accommodation prices are 20-30% higher. Dive shops are busiest. That said, "crowded" on Bonaire means you might see three other trucks at a dive site instead of zero. Book accommodation 2-3 months ahead.
Green Season (October to January)
Weather
The trade winds ease slightly. Occasional rain showers (brief, 15-20 minutes) break the dry stretch. Humidity rises marginally. Temperatures remain 27-31°C. The landscape — normally arid and brown — gets faint green patches after rain, hence "green season."
Diving Conditions
With lighter winds, the eastern shore sites become more accessible. Washington Slagbaai's bays (Boca Slagbaai, Boca Bartol) are diveable more often. Playa Funchi is worth the drive.
Visibility may drop slightly after rain (sediment runoff) but typically recovers within a day. Night diving is outstanding October-November when seas are at their calmest.
Wildlife
Sea turtle nesting season peaks June through November — you'll see more turtles on the reef during this period, particularly hawksbill and loggerhead. On night dives, turtle encounters are common at sites like Karpata and Nukove.
The donkeys at the sanctuary don't have a season. They're friendly year-round.
Crowds & Pricing
October and November are the quietest months. Accommodation drops 20-30%. Dive shops run specials. The island feels genuinely empty. If you want Bonaire at its most peaceful (and cheapest), this is the window.
Month-by-Month Snapshot
Month
Temp (Air)
Wind
Rain
Crowds
Diving Focus
Jan
28°C
Moderate
Low
High
West coast, night dives
Feb
28°C
Building
Low
Peak
West coast, flamingo nesting begins
Mar
29°C
Strong
Minimal
Peak
All west coast, windsurfing starts
Apr
30°C
Strong
Minimal
Moderate
Macro photography, calm visibility
May
31°C
Strong
Minimal
Low
Best overall conditions
Jun
32°C
Strong
Minimal
Low
Seasonal Packing Additions
All year: Reef-safe sunscreen (mandatory — Bonaire enforces this), 3mm wetsuit or rashguard, diving watch/computer, water shoes for ironshore entries.
Windy season (Feb-Aug): Windbreaker for boat rides, anti-fog spray for masks (wind chop = more mask clearing).
Green season (Oct-Jan): Light rain jacket, bug spray (mosquitoes increase after rain), flashlight/torch for power outages (rare but possible).
My Recommendation
Best overall: May or June. Good visibility, manageable wind, low crowds, good prices, turtle encounters beginning.
Best value: September or October. Lowest prices, quietest island, calm seas, turtles still around.
Best if you also windsurf: March or April. Peak wind, peak diving, flamingo breeding.
Avoid if budget-conscious: February (peak season prices) and late December (holiday markup).
But honestly? Bonaire's reef doesn't care what month it is. The coral is there. The fish are there. The yellow stone markers are there. You pull over, gear up, and walk in. That's the deal, January through December.
If you're exploring more of the Caribbean, Curacao offers a completely different experience worth considering.
If you're exploring more of the Caribbean, Aruba offers a completely different experience worth considering.
If you're exploring more of the Caribbean, Cayman Islands offers a completely different experience worth considering.
If you're exploring more of the Caribbean, Cozumel offers a completely different experience worth considering.
Sample Seasonal Itinerary: October Value Trip
Day 1: Arrive BON, pick up truck, buy marine park tag (US$45). Afternoon dive at Bari Reef.
Day 2: Morning: 1000 Steps and Ol' Blue. Afternoon: Klein Bonaire water taxi + snorkeling.
Day 3: Full day in Washington Slagbaai National Park (east coast sites accessible).
Day 4: Morning: Hilma Hooker wreck. Afternoon: Salt Pier. Evening: night dive at Town Pier.
Day 5: Donkey Sanctuary. Lac Bay kayaking. Sunset from south salt pans.
Day 6: Three dives: your choice from the 80+ sites you haven't hit yet.
Day 7: Morning dive. Airport.
Total estimated cost (7 nights, October): US$1,100-1,400 per person. Peak season: add 25-30%.
