Weather in San Isidro in November

A good month. November works. It is not the peak, but nothing about it fights you. You should expect rain on 25 days of the month, which is more days wet than dry.

November ranks 5 of 12 in San Isidro: past the worst of the year but short of February, which is the month to book if the dates are open.

Rain on 25 of the month's 30 days, 8 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average November reaches 30 °C; the day barely swings — 4.9 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest November day reached 28.2 °C and the coldest night fell to 17.9 °C, and the wettest single day dropped 101 mm — roughly 40% of the month's rain in one day.

November is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest November on record still delivered 467 mm against 151 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 254 mm average is a reasonable planning figure, not a promise.

Wind is light at 1.6 km/h, so the temperature on the page is close to the temperature on your skin, and humidity at 90% is the real story though — it is the number that decides how the day feels, not the 25.7 °C.

How November sits in the year

Temperatures hold steady either side: 25.6 °C in October, 25.7 here, 26.1 in December. Nothing about the timing within the month matters much. Rain is the thing that moves: December brings 6 days less of it, so pushing the dates later buys drier weather.

Daylight in November

San Isidro sits close enough to the equator that daylight barely moves all year — 11.7 hours in November, against a range of just 1.1 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

An inland climate

Despite being inland, the year stays fairly even: 9.3 °C between the year's warmest afternoons and coldest nights. At 713 m the air is thin enough to matter — sun that burns faster than the temperature suggests, and nights that cool off quickly.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

November in San Isidro versus nearby

If San Isidro is one option among several, the nearby comparison is worth making. San José is close enough to be a coin toss — 2.7 °C cooler, 3 days less rain. Limón is the weaker option in November — 2.5 °C warmer, 2 days more rain.

So: November works, with February the better month by 11 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in San Isidro

See all twelve months in San Isidro, or where else to go in November.