Sea temperature in Dominican Republic
Live water temperatures and swimming conditions across 23 beaches on the Dominican Republic coast.
Best time to swim in Dominican Republic
The sea in Dominican Republic 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 26°C, when cold-water swimmers dominate the coast.
Dominican Republic sea temperature history
Long-term climatology for Dominican Republic shows an annual mean sea temperature of 28°C, ranging from 26°C in winter to 29°C at the summer peak.
The seasonal swing is roughly 3°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 Dominican Republic, 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.
Values are area averages; individual beaches vary by exposure and depth.
Dominican Republic sea temperature: frequently asked questions
What is the warmest month to swim in Dominican Republic?
July is the warmest month in Dominican Republic, when the sea averages about 29°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Dominican Republic?
The coldest month in Dominican Republic is typically January, when the water averages around 26°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Dominican Republic without a wetsuit?
The main swimming season in Dominican Republic 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 Dominican Republic?
Dominican Republic 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 Dominican Republic?
The long-term annual mean sea temperature in Dominican Republic is about 28°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Dominican Republic?
The live reading at the top of this page shows the current sea temperature in Dominican Republic, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Dominican Republic sea temperature by month
Average sea temperatures around Dominican Republic for every month of the year, based on long-term Open-Meteo marine climatology.
| Month | Average sea | Swimming comfort |
|---|---|---|
| January | 26.0°C | Warm swimming |
| February | 26.0°C | Warm swimming |
| March | 26.0°C | Warm swimming |
| April | 27.0°C | Very warm, bath-like |
| May | 28.0°C | Very warm, bath-like |
| June | 28.0°C | Very warm, bath-like |
| July ⭐ | 29.0°C | Very warm, bath-like |
| August | 29.0°C | Very warm, bath-like |
| September | 29.0°C | Very warm, bath-like |
| October | 29.0°C | Very warm, bath-like |
| November | 28.0°C | Very warm, bath-like |
| December | 27.0°C | Very warm, bath-like |
Monthly figures are modelled climatology averages, not live readings. How accurate is our data?
Warmest beaches in Dominican Republic right now
| Beach | Region | Sea | Swim score |
|---|---|---|---|
| Playa Cofresi | Puerto Plata | 29.7°C | Excellent |
| Playa Rincon | Samana | 29.6°C | Excellent |
| Bavaro Beach | Punta Cana | 29.6°C | Excellent |
| Playa Macao | La Altagracia | 29.5°C | Excellent |
| Playa Dorada | Puerto Plata | 29.5°C | Excellent |
| Playa Bayahibe | La Romana | 29.4°C | Excellent |
| Saona Island Beach | La Romana | 29.4°C | Excellent |
| Playa Boca Chica | Santo Domingo | 29.3°C | Excellent |
| Playa Grande DR | Puerto Plata | 29.2°C | Excellent |
| Uvero Alto Beach | Punta Cana | 29.1°C | Excellent |
| Playa Fronton | Samana | 29.0°C | Excellent |
| Playa Las Ballenas | Samana | 29.0°C | Excellent |
| Playa Blanca Punta Cana | Punta Cana | 28.9°C | Excellent |
| Cabarete Beach | Puerto Plata | 28.8°C | Excellent |
| Macao Beach | La Altagracia | 28.8°C | Excellent |
| Las Terrenas Beach | Samana | 28.8°C | Excellent |
| Playa Bonita Samana | Samana | 28.7°C | Excellent |
| Sosua Beach | Puerto Plata | 28.6°C | Excellent |
| Catalina Island Beach | La Romana | 28.6°C | Excellent |
| Bavaro Beach | La Altagracia | 28.5°C | Excellent |
| Juanillo Beach | La Altagracia | 28.5°C | Excellent |
| Playa Coson | Samana | 28.5°C | Excellent |
| Playa Dominicus | La Romana | 28.4°C | Excellent |
Sea temperature in Dominican Republic — FAQ
How warm is the sea in Dominican Republic in September?
The sea off Dominican Republic averages about 29.0°C in September, based on long-term monthly averages for this coast.
When is the best time to swim in Dominican Republic?
Dominican Republic is warmest in July (around 29.0°C) and coldest in January (around 26.0°C). There are typically 12 months a year when the water sits above 22°C.
What is the average yearly sea temperature in Dominican Republic?
Across all twelve months, the sea in Dominican Republic averages about 27.7°C.
Do you need a wetsuit to swim in Dominican Republic?
In peak season (around July, ~29.0°C) most swimmers are comfortable without a wetsuit. Outside summer, when the water drops toward 26.0°C, a 3/2mm to 5/4mm wetsuit is recommended.