- Temperature
- 24–31°C
Updated July 2026 · Sources cited: weather-and-climate.com, weather2travel.com
Good to know
Good to Know
- Best months for nomads: December–March (dry season, peak sunshine, lower humidity, ideal for beach/outdoor work). January is the driest and sunniest but also peak tourist season.
- Shoulder option: July–August (Canícula break provides a dry spell within rainy season; fewer tourists, lower prices, but afternoon rains still possible).
- Worst months to avoid: September–October (peak rainfall, heaviest downpours, 16+ rainy days/month, high humidity—outdoor travel can be disrupted in rural areas).
- Rainy season showers typically occur in afternoons/evenings and rarely last more than 2–3 hours, allowing morning work outdoors.
- Temperature is remarkably stable year-round (29–31°C (88°F) daytime / 23–26°C (73–79°F) nighttime), so seasonal choice is mainly about rainfall and sunshine hours rather than heat tolerance.
- Trade winds provide cooling relief, especially during the dry season (January peak wind speeds).
- Sea temperatures are warm enough for swimming year-round (26–29°C (79–84°F) / 78–84°F).
- Humidity is consistently high (69–80%), with the lowest relief in March; expect tropical conditions regardless of season.
Dry Season
- Months
- December to April
- Characteristics
- Windy, partly cloudy, minimal rainfall, ideal for outdoor activities
- Peak Conditions
- January–March (sunniest, driest)
- Rainfall Monthly Mm
- 7–50 mm
Temperature
- Daytime High Celsius
- 31
- Nighttime Low Celsius
- 24
- Daytime High Fahrenheit
- 88
- Nighttime Low Fahrenheit
- 75
Rainy Season
- Months
- May to October
- Characteristics
- Overcast, high rainfall, humid, afternoon/evening showers typical
- Peak Conditions
- September–October (heaviest rainfall, 16–21 rainy days/month)
- Rainfall Monthly Mm
- 78–289 mm
Temperature
- Daytime High Celsius
- 31
- Nighttime Low Celsius
- 23
- Daytime High Fahrenheit
- 88
- Nighttime Low Fahrenheit
- 73
CaníCula
- Months
- July–August (within rainy season)
- Characteristics
- Brief dry spell interrupting the rainy season; drier, sunnier weather
- Note
- Duration and intensity vary year to year
- Climate Type
- Tropical wet/dry savanna (Köppen-Geiger Aw classification)
- Note
- Hot year-round with distinct dry and rainy seasons; no snowfall
Annual Summary
- Driest Month
- March (7.2 mm / 0.3 in, 5 rainy days)
- Coolest Month
- January (29°C (84°F) / 84°F daytime)
- Warmest Month
- April (31°C (88°F) / 88°F daytime)
- Wettest Month
- October (289 mm / 11.4 in, 21 rainy days)
- Annual Rainfall Mm
- 1426
- Annual Rainfall Inches
- 56
Humidity And Wind
- Humidity Peak
- October (rainy season, ~85%)
- Humidity Lowest
- March (dry season, ~69%)
- Wind Speed Range
- Windier in dry season (January peak); calmer in rainy season
- Relative Humidity Range
- 69–80% year-round
Seawater Temperature
- Coolest Month Name
- February
- Warmest Month Name
- June
- Coolest Month Celsius
- 26
- Warmest Month Celsius
- 29
- Coolest Month Fahrenheit
- 78
- Warmest Month Fahrenheit
- 84
- Average Year Round Celsius
- 27
- Average Year Round Fahrenheit
- 80
Sunshine And Daylight
- Sunniest Month
- March (8.3 hours/day average sunshine)
- Least Sunny Month
- June (4.0 hours/day average sunshine)
- Daylight Hours Year Round
- 11.5–12.8 hours
AI-generated estimateData refreshed July 2026
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About San Juan del Sur
Data last updated July 2026 · Verify anything important.