Cape Verde A beach holiday does not have to mean choosing between cold water and exhausting heat. In many popular destinations, the warmest sea temperatures arrive at the same time as the hottest weather. That is ideal if you love intense summer heat, but less appealing if you want to swim, explore, walk and eat outside without constantly looking for shade.
There is another option: travel during the climate sweet spot. In some destinations, the sea stays warm after the hottest part of summer has passed. In others, the tropical dry season brings slightly cooler air while the water remains warm enough for long swims.
For this comparison, we looked for destinations where average daytime temperatures are generally between 24°C (75°F) and 29°C (84°F), while average sea temperatures are around 23°C (73°F) or warmer. The result is a mix of Mediterranean, Atlantic, Caribbean and Pacific destinations where swimming weather and comfortable air temperatures overlap particularly well.
Warm sea and comfortable weather at a glance
| Destination | Sweet spot | Daytime | Nighttime | Sea | Rainfall | Rainy days | Sunshine |
|---|---|---|---|---|---|---|---|
| Tenerife, Spain | September | 24°C (75°F) | 21°C (70°F) | 23°C (73°F) | 15 mm (0.6 in) | 3 | 251 hrs |
| Madeira, Portugal | September | 24°C (75°F) | 21°C (70°F) | 23°C (73°F) | 31 mm (1.2 in) | 6 | 211 hrs |
| Crete, Greece | September | 28°C (82°F) | 20°C (68°F) | 25°C (77°F) | 21 mm (0.8 in) | 1 | 276 hrs |
| Ayia Napa, Cyprus | October | 26°C (79°F) | 23°C (73°F) | 25°C (77°F) | 17 mm (0.7 in) | 4 | 270 hrs |
| Santa Maria, Cape Verde | November | 26°C (79°F) | 24°C (75°F) | 25°C (77°F) | 4.1 mm (0.2 in) | 1 | 190 hrs |
| Westpunt, Curaçao | February | 28°C (82°F) | 25°C (77°F) | 25°C (77°F) | 33 mm (1.3 in) | 8 | 248 hrs |
| Honolulu, Hawaii | February | 25°C (77°F) | 21°C (70°F) | 24°C (75°F) | 43 mm (1.7 in) | 10 | 213 hrs |
| San José del Cabo, Mexico | November | 29°C (84°F) | 21°C (70°F) | 26°C (79°F) | 19 mm (0.7 in) | 1 | 240 hrs |
Climate figures are historical averages from Weather & Climate. Sea temperatures and daily weather vary from year to year, and local conditions can differ within larger islands and regions.
1. Tenerife in September: the Atlantic at its warmest
Tenerife is a good example of why the hottest month is not always the most useful measure for a beach holiday. September arrives after the Atlantic has had an entire summer to warm up, while the island's air temperatures remain moderate by southern European standards.
Average daytime temperatures reach 24°C (75°F), with nights around 21°C (70°F). The sea averages 23°C (73°F), while monthly rainfall is only 15 mm (0.6 in) over around three days. Tenerife also receives approximately 251 hours of sunshine during September.
The south and southwest of the island are usually the most obvious choices for travelers who prioritize sunshine and beaches. Tenerife has significant local climate differences, so a single island-wide average does not tell the whole story. The greener north can be cloudier, while the southern resorts generally experience drier conditions.
The sea is cooler than in the Mediterranean or Caribbean destinations in this article, but 23°C (73°F) is comfortable for many swimmers, especially when the sun is out. The important point is the balance: you get Tenerife's warmest sea temperatures without needing to tolerate sustained extreme heat.
Why September works: the Atlantic reaches around 23°C (73°F) while average daytime temperatures remain at a very manageable 24°C (75°F).
2. Madeira in September: warm water, walking weather
Madeira is not a conventional beach-resort destination, but it may be one of the best choices for travelers who want to combine swimming with an active holiday. In September, Funchal averages 24°C (75°F) during the day and 21°C (70°F) at night, while the Atlantic averages 23°C (73°F).
Rainfall is around 31 mm (1.2 in) over six days, and the month receives approximately 211 hours of sunshine. That makes September one of the most attractive periods for enjoying the sea without giving up the island's famous walks, viewpoints and mountain landscapes.
Madeira's volcanic coastline means you should not expect endless sandy beaches. Natural swimming pools, rocky coves, ocean platforms and smaller beaches are a bigger part of the experience. The reward is that the island gives you far more to do away from the water than a typical resort destination.
September is especially useful because the sea lags behind the seasons. In late spring, the air can already feel pleasantly warm while the Atlantic is still relatively cool. By September, both have reached a much better balance.
Why September works: both the daytime air and the sea sit close to 24°C (75°F) and 23°C (73°F), making it easy to alternate swimming with hiking or sightseeing.
3. Crete in September: Mediterranean summer without the worst heat
Crete offers one of the warmest combinations in this comparison. Around Heraklion, September brings average daytime temperatures of 28°C (82°F), while nights cool to around 20°C (68°F). The sea remains a very comfortable 25°C (77°F).
Rainfall is low at just 21 mm (0.8 in), typically concentrated into around one rainy day, and the month receives approximately 276 hours of sunshine. For travelers who want a genuinely warm beach holiday without choosing the peak of midsummer, those numbers are hard to beat.
The main advantage of September is that the sea has barely cooled from its summer peak, but afternoon temperatures are beginning to ease. That makes archaeological sites, villages and longer drives around the island considerably more comfortable than they can be during the hottest weeks of July and August.
Crete is a large island and local conditions vary, but the broader pattern is consistent: early autumn combines warm Mediterranean water with a declining risk of extreme heat.
Why September works: the sea remains at around 25°C (77°F) while average daytime temperatures settle at 28°C (82°F).
4. Ayia Napa in October: summer stays in the sea
Cyprus shows particularly clearly why autumn can be better than spring for swimming. By October, the intense summer heat has eased, but the eastern Mediterranean is still carrying months of accumulated warmth.
Ayia Napa averages 26°C (79°F) during the day and 23°C (73°F) at night in October. Monthly rainfall is only 17 mm (0.7 in) over around four days, with approximately 270 hours of sunshine. Sea temperatures on the Famagusta coast remain around 25°C (77°F).
That 25°C (77°F) water temperature is what makes October stand out. Similar daytime temperatures can occur in late spring, but the sea is much cooler then because it has not yet absorbed the heat of summer.
October also makes exploring Cyprus easier. Coastal walks, archaeological sites and outdoor lunches are much more appealing when the average daytime temperature has dropped into the mid-20s.
Why October works: the eastern Mediterranean is still around 25°C (77°F), but average daytime temperatures have fallen to 26°C (79°F).
5. Santa Maria in November: tropical water with almost no rain
Santa Maria on the island of Sal offers one of the clearest warm-but-not-extreme combinations in this article. November averages 26°C (79°F) during the day and 24°C (75°F) at night, while the Atlantic remains at around 25°C (77°F).
The month is exceptionally dry. Average rainfall is just 4.1 mm (0.2 in), normally falling on around one day, while Santa Maria receives approximately 190 hours of sunshine.
Cape Verde's trade winds are an important part of the climate. Even on warm days, the breeze can make conditions feel more comfortable than the thermometer suggests. The same wind is also one reason the islands are popular with kitesurfers and windsurfers.
For Europeans, November is particularly interesting because the Mediterranean swimming season is fading just as Cape Verde is entering an exceptionally dry period. It is warm enough to feel tropical without the oppressive combination of heat and humidity found in many equatorial destinations.
Why November works: 25°C (77°F) sea water, 26°C (79°F) days and only 4.1 mm (0.2 in) of average rainfall create an unusually clean climate sweet spot.
6. Westpunt, Curaçao in February: Caribbean warmth below 30°C (86°F)
You do not have to leave the tropics to find more comfortable temperatures. February is among the cooler periods in Curaçao, although "cool" is relative in the southern Caribbean.
Westpunt averages 28°C (82°F) during the day and 25°C (77°F) at night. The Caribbean Sea averages 25°C (77°F), while monthly rainfall is around 33 mm (1.3 in) across approximately eight days. February still delivers about 248 hours of sunshine.
Eight rainy days can sound less attractive than the rainfall totals suggest, but tropical rainfall often comes in short showers rather than all-day rain. The monthly total of 33 mm (1.3 in) is still relatively modest.
Westpunt is also a good fit for the subject of this article because the western side of Curaçao is known for small coves, clear water and snorkeling. It is a quieter alternative to staying around Willemstad, and the climate varies very little across the island.
Why February works: the sea stays at 25°C (77°F) while average daytime highs remain at 28°C (82°F), giving you Caribbean swimming conditions without average highs above 30°C (86°F).
7. Honolulu in February: Hawaii at its coolest
Hawaii's winter demonstrates how little tropical ocean temperatures can change even when the air becomes noticeably more comfortable. Honolulu averages 25°C (77°F) during the day and 21°C (70°F) at night in February, while the Pacific remains at around 24°C (75°F).
Average rainfall is 43 mm (1.7 in) over about ten days, and Honolulu receives approximately 213 hours of sunshine. It is wetter than several of the destinations higher on this list, but the total rainfall is still moderate.
The great advantage is versatility. 25°C (77°F) weather is warm enough for the beach but also much easier for hiking, walking around Honolulu or exploring Oahu than a hotter tropical climate would be.
The Pacific at 24°C (75°F) will feel a little more refreshing than the water around Curaçao or Baja California, but it is still comfortably swimmable for most people.
Why February works: Honolulu drops to average daytime temperatures of 25°C (77°F) while the Pacific stays at a swimmable 24°C (75°F).
8. San José del Cabo in November: the desert cools before the sea
At the southern tip of Baja California, November creates one of the most dramatic land-and-sea contrasts in this comparison. The intense desert heat of summer and early autumn begins to fade, but the surrounding water cools much more slowly.
San José del Cabo averages 29°C (84°F) during the day and 21°C (70°F) at night in November. The sea remains at a particularly warm 26°C (79°F). Average rainfall is only 19 mm (0.7 in), generally over around one day, and the month receives approximately 240 hours of sunshine.
This is the warmest air temperature included in the comparison, so San José del Cabo suits travelers who still want a distinctly hot beach holiday. The difference is that 29°C (84°F) is much easier to manage than the temperatures experienced earlier in the season, while the sea has retained almost all of its warmth.
The low rainfall is another major advantage. November comes after the much wetter late-summer period and before the coolest water temperatures of winter and spring.
Why November works: the sea is still around 26°C (79°F) after the desert air has cooled to an average daytime high of 29°C (84°F).
Why autumn is often the best time for warm sea and comfortable air
September, October and November appear repeatedly in this comparison for a simple physical reason: water warms and cools more slowly than land.
After several months of summer sunshine, the sea can remain close to its annual maximum temperature even when shorter days and a lower sun angle have already started cooling the air. The result is a window in which the water still feels like summer while afternoons become much more comfortable.
In spring, the opposite often happens. A Mediterranean destination may already have pleasant 23°C (73°F) or 24°C (75°F) afternoons, but the sea is still carrying the cold of winter. That can produce beautiful weather for sightseeing but surprisingly chilly swimming.
This seasonal lag is particularly clear in Crete, Cyprus and Baja California, where early autumn is often more attractive for swimmers than late spring at a similar air temperature.
How warm does the sea need to be?
Sea temperature is personal. At around 23°C (73°F), many people find the water pleasant on a sunny day, although it still feels refreshing when you first get in. Tenerife and Madeira sit around this level during their September sweet spot.
At 24°C (75°F) to 25°C (77°F), swimming becomes comfortable for a much wider group of people, especially for longer periods. This is where Honolulu, Crete, Cyprus, Cape Verde and Curaçao fit into the comparison.
A sea temperature of around 26°C (79°F) feels distinctly warm. San José del Cabo reaches that level in November, making it the warmest water in this selection.
That distinction matters because two destinations with identical 25°C (77°F) air temperatures can provide very different beach experiences if one has 20°C (68°F) water and the other has 25°C (77°F) water.
Which destination gives you the best balance?
- For the coolest daytime weather: Tenerife or Madeira in September, both around 24°C (75°F) during the day with 23°C (73°F) sea temperatures.
- For the warmest Mediterranean swimming: Crete in September or Cyprus in October, with sea temperatures around 25°C (77°F).
- For extremely dry weather: Santa Maria in November stands out with only 4.1 mm (0.2 in) of average rainfall.
- For a tropical winter escape: Westpunt and Honolulu keep the sea warm in February while daytime temperatures remain below 30°C (86°F).
- For the warmest sea in the comparison: San José del Cabo in November, at around 26°C (79°F).
The beach-weather sweet spot
The hottest month of the year is not automatically the best month for a beach holiday.
If you want warm water but dislike extreme heat, the better strategy is often to travel just after the hottest season. The sea is slow to give up the warmth it accumulated during summer, while the land and air begin cooling much sooner.
That is why September can be especially appealing in Tenerife, Madeira and Crete, October works so well in Cyprus, and November creates excellent conditions in Cape Verde and Baja California.
Instead of looking only at the maximum air temperature, compare the air and sea together. A sunny 25°C (77°F) day next to a 24°C (75°F) sea can be a far more comfortable beach holiday than a 35°C (95°F) afternoon beside water that is only a few degrees warmer.