San Andrés is rarely comfortable to be outside at midday. It comes closest in early January, and even then it is too hot. For sun, aim for late November to April.
When to go five ratings · thirty-six ten-day sections · click a cell to read it
For sun, go from late November to April, with a second spell in early and mid July. It peaks in early February, at 85. Avoid September to early October for this: it falls to 26, mostly because it is too hot. The clearest skies come in February, when the sky is typically 41% covered at midday (partly cloudy).
Being outside is not what San Andrés is for: the Easy outdoors rating tops out at 14, mostly because it is too hot.
Walking is not what San Andrés is for: the Active outdoors rating tops out at 1, mostly because it is too warm.
The year, measured
The average temperature in San Andrés over the whole year is 28°C. September is the hottest month, with highs of about 31°C; February is the coldest, with lows of about 26°C. San Andrés has no sharply defined rainy season: the chance of rain on a given day runs from 3% in March, the driest month, to 14% in October, the wettest. Winds in San Andrés are highest in February, averaging 5.1 m/s (18 km/h), and lightest in October, at 2.7 m/s (10 km/h). The prevailing wind is from the NE. The clearest skies in San Andrés come in February, when the sky is typically 40% covered; June is the cloudiest month, at 66%.
Month by month San Andrés climate by month: average temperatures year round · click a month to read it
| Month | High | Low | Feels like | Chance of rain | Cloud | Wind | Being outside | Sun | Walking |
|---|---|---|---|---|---|---|---|---|---|
| January | 29°C | 26°C | 30°C | 7% | 47% | 4.9 m/s | 12 | 79 | 1 |
| February | 29°C | 26°C | 30°C | 4% | 40% | 5.1 m/s | 13 | 84 | 1 |
| March | 30°C | 26°C | 31°C | 3% | 42% | 4.6 m/s | 5 | 80 | 0 |
| April | 30°C | 27°C | 32°C | 3% | 52% | 4.3 m/s | 1 | 66 | 0 |
| May | 31°C | 28°C | 34°C | 4% | 61% | 4.0 m/s | 1 | 43 | 0 |
| June | 30°C | 27°C | 33°C | 8% | 66% | 4.2 m/s | 3 | 46 | 0 |
| July | 30°C | 28°C | 33°C | 9% | 64% | 5.1 m/s | 2 | 53 | 0 |
| August | 30°C | 27°C | 34°C | 8% | 64% | 3.9 m/s | 2 | 39 | 0 |
| September | 31°C | 27°C | 35°C | 8% | 62% | 2.9 m/s | 2 | 27 | 0 |
| October | 30°C | 27°C | 34°C | 14% | 63% | 2.7 m/s | 2 | 32 | 0 |
| November | 30°C | 27°C | 33°C | 12% | 60% | 3.8 m/s | 2 | 52 | 0 |
| December | 29°C | 27°C | 31°C | 10% | 52% | 5.1 m/s | 7 | 74 | 1 |
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short San Andrés weather by season
Year round, San Andrés has days of about 29°C at their warmest in January, its coolest month, and 31°C in September, its warmest; the coolest hours of the day run from 26°C to 28°C through the year, and the average temperature over the year is 28°C around the clock. Rain is most likely around October and least likely around March. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
San Andrés weather in winterDecember to February
Winter in San Andrés has typical daily highs of about 29°C and lows of about 26°C, with a 7% chance of rain on a given day.
San Andrés weather in springMarch to May
Spring in San Andrés has typical daily highs of about 30°C and lows of about 27°C, with a 3% chance of rain on a given day.
San Andrés weather in summerJune to August
Summer in San Andrés has typical daily highs of about 30°C and lows of about 27°C, with a 8% chance of rain on a given day.
San Andrés weather in autumnSeptember to November
Autumn in San Andrés has typical daily highs of about 30°C and lows of about 27°C, with a 11% chance of rain on a given day.
When is the rainy season in San Andrés?
San Andrés has no sharply defined rainy season: the chance of rain on a given day runs from 3% in March, the driest month, to 14% in October, the wettest.
What time of year is San Andrés windiest?
Winds in San Andrés are highest in February, averaging 5.1 m/s (18 km/h), and lightest in October, at 2.7 m/s (10 km/h). The prevailing wind is from the NE.
What is the average temperature in San Andrés year round?
The average temperature in San Andrés over the whole year is 28°C. September is the hottest month, with highs of about 31°C; February is the coldest, with lows of about 26°C.
Where to go instead in early May, the weakest time here for being outside
How this is worked out
Every figure is a decade of weather-station observations blended into one typical year, in ten-day sections. The ratings, the chart and the feels-like column are read at midday local solar time. Being outside is the Easy outdoors rating, Sun is Sunbathing and Walking is Active outdoors, each out of 100: Good from 55, Ideal from 80. They describe what a time of year is usually like here, not a forecast. The dotted links open the map at that time of year; set its time of day to midday to see these numbers.