San Jose, Costa Rica skyline

San Jose Weather in April

What April is usually like in San Jose, Costa Rica — from 2006–2025 averages.

Expect San Jose to reach about 26.4°C (79.5°F) by day and 17.4°C (63.3°F) at night in April, with 18 rainy days bringing 116 mm and around 10.2 hours of sunshine each day.

Avg high

26.4°C (79.5°F)

Avg low

17.4°C (63.3°F)

Rainfall

116 mm (4.6 in)

Rainy days

18 days

Sunshine

10.2 h / day

Humidity

77%

April vs the rest of the year

April is warmer than 10 of the other 11 months, and the 4th driest month in San Jose.

MonthAvg highvs AprilRainRainy days
January24.6°C (76.3°F)−1.8°C (−3.2°F)75 mm11
February25.8°C (78.4°F)−0.6°C (−1.1°F)55 mm8
March26.6°C (79.9°F)+0.2°C (+0.4°F)54 mm12
April26.4°C (79.5°F)—116 mm18
May25.1°C (77.2°F)−1.3°C (−2.3°F)349 mm27
June24.3°C (75.7°F)−2.1°C (−3.8°F)383 mm29
July24.3°C (75.7°F)−2.1°C (−3.8°F)320 mm26
August24.4°C (75.9°F)−2°C (−3.6°F)387 mm28
September24.4°C (75.9°F)−2°C (−3.6°F)402 mm29
October23.8°C (74.8°F)−2.6°C (−4.7°F)487 mm30
November23.4°C (74.1°F)−3°C (−5.4°F)360 mm26
December23.9°C (75°F)−2.5°C (−4.5°F)134 mm16

What April feels like in San Jose

April is part of San Jose's dry season, when rain totals drop well below the wet months. Warm daytime weather invites long lunches outside and evening strolls. Once the sun goes down the air changes: nights stay mild. The air is muggy, so it feels hotter than the thermometer suggests.

Rain in San Jose in April

Rain is part of normal life this month, falling on most days. Wet days average about 6.5 mm (0.3 in), enough to soak you without an umbrella. That is lighter than the city's yearly norm of about 12 mm per rainy day.

Daylight and sunshine in April

On 15 April the sun rises at about 5:26 am and sets around 5:47 pm local time, giving 12 h 20 min of daylight. The days are stretching out — 17 min more daylight than mid-March. Close to the equator, sunrise and sunset times move very little through the year. Measured sunshine covers about 83% of the daylight — skies are mostly clear.

How April compares to the rest of the year

Ranked by average high, April comes out as the 2nd warmest month in San Jose. It is about as warm as March, with 62 mm more rain. May is cooler again. The next month's average high: 25.1°C (77.2°F).

Who April suits

  • Sightseeing: less ideal — rain falls on more than half the days.
  • Parks & outdoor: less ideal — afternoons are too warm to linger outside.
  • Museums & indoor: a good choice — with rain on most days, galleries and museums make easy plans.

Tips for visiting San Jose in April

Versatile Layers

Mornings and evenings are cooler than midday, so dress in layers.

Rain Protection

Keep a small umbrella in your bag and wear shoes that cope with puddles.

Sunglasses

Bright days make sunglasses worth packing.

Quick questions

How warm is San Jose in April?

Expect around 26.4°C (79.5°F) in the afternoon and 17.4°C (63.3°F) at night, which most visitors would call warm.

Does it rain a lot in San Jose in April?

Quite a lot — 116 mm spread over about 18 days.

What should I wear in San Jose in April?

Based on the averages: versatile layers, rain protection and sunglasses. Bring something extra for the cooler evenings.

Is April or May better for visiting San Jose?

April, clearly: it ranks #5 of 12 among San Jose's months, against #8 for the other. May is cooler and has more rainy days.

Is April a good time to visit San Jose?

Good

Good — comfortable temperatures, rain on most days (about 18), plenty of sunshine (10.2 h a day). Within San Jose's own year, April ranks #5 of 12.

Drier places in April

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Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in San Jose weather by month.