Boston Bay Water Temperature & Swim Forecast
Jamaica's best surf beach and jerk capital.
Live conditions loading.
Location
Boston Bay on the map, with nearby beaches and live sea temperatures.
7-day forecast
Water, air, waves, wind and UV outlook for the week ahead.
Check live temperature
Live water temperature is loading — refresh in a moment for a precise recommendation.
Recommendation tuned for Boston Bay's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.
Boston Bay swimming conditions summary
- Water temperature
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- Water feels
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- Swimmable today
- Loading live reading
- Swim conditions score
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- Wetsuit needed
- Check live temperature
- Air temperature
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- Waves
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- Wind
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- UV index
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- Warmest months to swim
- July, August, September
Live water temperature is loading — refresh in a moment for a precise recommendation. Live marine data updated hourly from Open-Meteo Marine.
Frequently asked questions
Can I swim at Boston Bay right now?
Live data is loading. Use the 7-day forecast above to plan your swim — conditions above 22°C are comfortable for most swimmers.
What will the sea temperature be at Boston Bay next week?
Based on long-term August averages and the latest marine model, expect the sea around Boston Bay to sit close to 29.0°C over the next 7 days. Check the live 7-day chart above for the exact daily outlook.
When is the best month to swim at Boston Bay?
July – August – September are typically the warmest months to swim at Boston Bay, with sea temperatures at their seasonal peak.
Can I swim at Boston Bay today?
Live data is loading. In summer, this beach typically offers comfortable swimming conditions.
- • Located in Portland, Jamaica (Caribbean Sea).
- • Best suited to confident swimmers and watersports.
- • Live data refreshed hourly from Open-Meteo Marine.
Monthly sea temperature averages
Tap any month to see what to expect — based on regional climatology.
Best time to swim in Boston Bay
The sea in Boston Bay peaks in July, when the water averages around 29°C.
The main swimming season runs from January – December, when surface temperatures stay comfortable for extended sessions.
On average, 12 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
The coldest month is typically January at around 27°C, when cold-water swimmers dominate the coast.
Boston Bay sea temperature history
Long-term climatology for Boston Bay shows an annual mean sea temperature of 28°C, ranging from 27°C in winter to 29°C at the summer peak.
The seasonal swing is roughly 2°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.
Recent decades have trended slightly warmer at Boston Bay, in line with regional sea-surface temperature records for the wider basin.
Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.
Boston Bay sea temperature: frequently asked questions
What is the warmest month to swim in Boston Bay?
July is the warmest month in Boston Bay, when the sea averages about 29°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Boston Bay?
The coldest month in Boston Bay is typically January, when the water averages around 27°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Boston Bay without a wetsuit?
The main swimming season in Boston Bay runs from January – December — about 12 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.
Do I need a wetsuit in Boston Bay?
Boston Bay stays warm year-round, so most swimmers never need a wetsuit — a rash guard is usually enough for sun and wildlife protection.
What is the average sea temperature in Boston Bay?
The long-term annual mean sea temperature in Boston Bay is about 28°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Boston Bay?
The live reading at the top of this page shows the current sea temperature in Boston Bay, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Year-round sea temperature
Best swim months: Jan – Feb – Mar – Apr – May – Jun – Jul – Aug – Sep – Oct – Nov – Dec
| Month | Sea | Comfort |
|---|---|---|
| Jan | 27°C | Hot |
| Feb | 27°C | Hot |
| Mar | 27°C | Hot |
| Apr | 27°C | Hot |
| May | 28°C | Hot |
| Jun | 28°C | Hot |
| Jul ⭐ | 29°C | Hot |
| Aug | 29°C | Hot |
| Sep | 29°C | Hot |
| Oct | 29°C | Hot |
| Nov | 28°C | Hot |
| Dec | 27°C | Hot |
Nearby beaches
The closest coastline, with live water temperatures.