Best time to visit Jacó
Month-by-month weather averages for Jacó.
Jacó, Puntarenas Province, Costa Rica
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 27.5 °C / 82 °F | 26.3 °C / 79 °F | 28 mm / 1.1 in | good month |
| February | 27.9 °C / 82 °F | 26.6 °C / 80 °F | 19 mm / 0.8 in | good month |
| March | 28.1 °C / 83 °F | 26.9 °C / 80 °F | 20 mm / 0.8 in | neither best nor good |
| April | 28.1 °C / 83 °F | 26.5 °C / 80 °F | 123 mm / 4.8 in | neither best nor good |
| May | 27.8 °C / 82 °F | 26.1 °C / 79 °F | 407 mm / 16 in | neither best nor good |
| June | 27.5 °C / 82 °F | 25.8 °C / 78 °F | 424 mm / 16.7 in | neither best nor good |
| July | 27.4 °C / 81 °F | 25.7 °C / 78 °F | 425 mm / 16.7 in | neither best nor good |
| August | 27.3 °C / 81 °F | 25.7 °C / 78 °F | 507 mm / 20 in | neither best nor good |
| September | 27.2 °C / 81 °F | 25.6 °C / 78 °F | 418 mm / 16.4 in | neither best nor good |
| October | 26.8 °C / 80 °F | 25.4 °C / 78 °F | 599 mm / 23.6 in | neither best nor good |
| November | 26.7 °C / 80 °F | 25.4 °C / 78 °F | 360 mm / 14.2 in | neither best nor good |
| December | 27.1 °C / 81 °F | 25.8 °C / 78 °F | 127 mm / 5 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: good
- FFebruary: good
- MMarch: neither
- AApril: neither
- MMay: neither
- JJune: neither
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Good
- January–February
Why these months
January · good
In its favour: precipitation 28 mm / 1.1 in, share of daylight that is sunny 95%, average daily high 27.5 °C / 82 °F, days with heavy rain 0.3 days, wet days 6.8 days.
Against: feels like (high) 32.5 °C / 91 °F, average daily low 26.3 °C / 79 °F, relative humidity 78%.
February · good
In its favour: precipitation 19 mm / 0.8 in, share of daylight that is sunny 97%, wet days 3.6 days, days with heavy rain 0.4 days, average daily high 27.9 °C / 82 °F, relative humidity 76%.
Against: feels like (high) 33 °C / 91 °F, average daily low 26.6 °C / 80 °F.
Beach and swimming
Hot, dry and sunny. Penalises the monsoon hard.
- JJanuary: best
- FFebruary: best
- MMarch: best
- AApril: good
- MMay: neither
- JJune: neither
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: neither
- NNovember: neither
- DDecember: good
- Best
- January–March
- Good
- April, December
Why these months
January · best
In its favour: average daily high 27.5 °C / 82 °F, precipitation 28 mm / 1.1 in, share of daylight that is sunny 95%, feels like (high) 32.5 °C / 91 °F, days with heavy rain 0.3 days, wet days 6.8 days, wind (daily max) 16 km/h / 10 mph, average daily low 26.3 °C / 79 °F.
February · best
In its favour: average daily high 27.9 °C / 82 °F, precipitation 19 mm / 0.8 in, share of daylight that is sunny 97%, feels like (high) 33 °C / 91 °F, wet days 3.6 days, days with heavy rain 0.4 days, wind (daily max) 18 km/h / 11 mph, average daily low 26.6 °C / 80 °F.
March · best
In its favour: average daily high 28.1 °C / 83 °F, precipitation 20 mm / 0.8 in, share of daylight that is sunny 96%, feels like (high) 33.6 °C / 92 °F, days with heavy rain 0.1 days, wet days 5.8 days, wind (daily max) 18 km/h / 11 mph, average daily low 26.9 °C / 80 °F.
April · good
In its favour: average daily high 28.1 °C / 83 °F, share of daylight that is sunny 88%, feels like (high) 33.7 °C / 93 °F, days with heavy rain 2.9 days, wind (daily max) 17 km/h / 11 mph, average daily low 26.5 °C / 80 °F.
Against: precipitation 123 mm / 4.8 in, wet days 18.9 days.
December · good
In its favour: average daily high 27.1 °C / 81 °F, share of daylight that is sunny 89%, feels like (high) 32.1 °C / 90 °F, days with heavy rain 2.5 days, average daily low 25.8 °C / 78 °F, wind (daily max) 15 km/h / 10 mph.
Against: precipitation 127 mm / 5 in, wet days 16.4 days.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Sugar Mountain Resort, 2961 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 32.5 °C | 33 °C | 33.6 °C | 33.7 °C | 33.2 °C | 32.7 °C | 32.6 °C | 32.4 °C | 32.3 °C | 31.5 °C | 31.5 °C | 32.1 °C |
| Days with heavy rain | 0.3 days | 0.4 days | 0.1 days | 2.9 days | 12.1 days | 13.5 days | 13.2 days | 14.1 days | 13.7 days | 16.4 days | 9.2 days | 2.5 days |
| Time rain usually falls | 2 am | 1 am | 12 am | 3 am | 2 am | 2 am | 1 am | 2 am | 2 am | 3 am | 3 am | 2 am |
| Sunshine per day | 11.1 h | 11.5 h | 11.6 h | 10.9 h | 9 h | 8.5 h | 8.2 h | 8 h | 8.2 h | 7.5 h | 8.7 h | 10.3 h |
| Relative humidity | 78% | 76% | 76% | 81% | 84% | 84% | 84% | 84% | 84% | 85% | 84% | 81% |
Sea temperature
Averaged over a shorter period (2022–2025) than the twenty-year averages above.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature 2022–2025 | 29.5 °C | 30.1 °C | 30.4 °C | 30.6 °C | 30.6 °C | 29.6 °C | 29.5 °C | 29.5 °C | 29.5 °C | 29 °C | 28.3 °C | 29 °C |
| Sea temperature (daily max) 2022–2025 | 29.7 °C | 30.3 °C | 30.7 °C | 30.9 °C | 30.8 °C | 29.9 °C | 29.7 °C | 29.7 °C | 29.8 °C | 29.2 °C | 28.5 °C | 29.2 °C |
- Very cold 10 °C or less
- Cold 10 to 15 °C
- Cool 15 to 20 °C
- Comfortable 20 to 25 °C
- Warm 25 to 28 °C
- Very warm over 28 °C
The words describe how the water feels to swim in. They are ours, not an official standard.
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 6.3 µg/m³ | 6.7 µg/m³ | 8.9 µg/m³ | 8.8 µg/m³ | 6.2 µg/m³ | 5.7 µg/m³ | 6.1 µg/m³ | 5.2 µg/m³ | 4.4 µg/m³ | 4.1 µg/m³ | 4.8 µg/m³ | 5.4 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 8.5 µg/m³ | 9.2 µg/m³ | 11.9 µg/m³ | 12 µg/m³ | 8.7 µg/m³ | 8.6 µg/m³ | 8.8 µg/m³ | 7.7 µg/m³ | 6.4 µg/m³ | 6 µg/m³ | 6.9 µg/m³ | 7.6 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.