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San Salvador in May: Weather, Average temperature and Climate

Take a look at past year’s weather for San Salvador in May and see if it is worth visiting.
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May

Weather in San Salvador in May 2025

OK Weather
Warm
🌧️
Rainy
San Salvador in May usually sees fair weather conditions, with an average daily high temperature of +84°F and roughly 1 sunny days. However, you should prepare for about 20 rainy days with an average precipitation of 218 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+84°F
Avg. max. temperature
+63°F
Min.
+95°F
Max.
218 mm
Total precipitation
81%
Avg. humidity
1 m/s
Avg. wind
1 ☀️
Sunny Days
2 ⛅️
Cloudy
20 🌦
Rainy
Our opinion: San Salvador has OK weather in May.

Average temperature in San Salvador in May

Here are the expected maximum, average and minimum temperatures in San Salvador for May based on the historical data.
Last Year
Historical Data

The temperature in May is +90°F on average, with a range between a maximum of +95°F during the day and a minimum of +68°F at night.

The average maximum temperature goes down 7% by the end of the month, compared with the beginning of the month, from +84°F to +82°F.

Is San Salvador warm or cold in May?

San Salvador is typically warm in May.

Maximum temperatures go down compared to the previous month from +86°F to +84°F. The minimum temperature also goes up from +70°F to +70°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

Take a look at how May is compared to other months in San Salvador:

Climate in San Salvador in May

San Salvador weather looks like this, on average, in May and the surrounding months.
AprilMayJune
Avg. temperature
+86°F+84°F+82°F
Min. temperature
+63°F+63°F+64°F
Max. temperature
+95°F+95°F+93°F
Rainfall
44 mm218 mm279 mm
Wind
2 m/s1 m/s1 m/s
Humidity
74%81%84%
Air pressure
1012 HPa1012 HPa1012 HPa
Sunny days
610
Cloudy days
521
Rainy days
172019
Snowy days
000

May typically has worse weather conditions compared to April. It’s getting colder in May. From +86°F in the day, the average maximum temperature lowers to +84°F. Prepare for more rain. Average rainfall goes from 44 mm to 218 mm. Humidity rises from 74% to 81%. Winds are calmer in comparison to April, going down from 2 m/s to 1 m/s on average. The days becoming less sunny, going from 6 sunny days in April to 1 in May.

June brings much the same weather, it remains ok.

Wind

Wind speed in San Salvador in May based on historical data.
Last Year
Historical Data

The average wind speed is 1 m/s getting up to 2 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in San Salvador is gradually decreasing during May, going from 2 m/s to 1 m/s over the course of the month.

Rain

Amount of rainfall in mm during May in San Salvador based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in May stands at 52%, leading to total precipitation of around 83 mm. The maximum amount of rainfall per day is around 18 mm, which is considered light rain. May is a pretty wet month with over 16 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how May is compared with other months in the amount of precipitation, total mm:
San Salvador wettest month is September, where a typical day has a 57% chance of precipitation and 336 mm of rainfall per day. January, on the other hand, is the driest month with a mere 10% chance of precipitation and 2 mm of rainfall per day.

How was the weather last May in San Salvador?

This is the weather in San Salvador in May 2023:
1 May
🌫️
+84°F
2 May
☁️
+82°F
3 May
🌫️
+91°F
4 May
☀️
+94°F
5 May
☁️
+96°F
6 May
🌫️
+94°F
7 May
🌫️
+91°F
8 May
🌫️
+93°F
9 May
🌫️
+88°F
10 May
☁️
+83°F
11 May
☁️
+89°F
12 May
🌫️
+88°F
13 May
🌧️
+85°F
14 May
☁️
+86°F
15 May
☀️
+91°F
16 May
🌧️
+90°F
17 May
☁️
+91°F
18 May
🌫️
+91°F
19 May
☀️
+93°F
20 May
☁️
+94°F
21 May
☁️
+93°F
22 May
☀️
+92°F
23 May
🌧️
+90°F
24 May
☁️
+88°F
25 May
☁️
+89°F
26 May
🌫️
+87°F
27 May
☁️
+90°F
28 May
☁️
+84°F
29 May
🌧️
+87°F
30 May
🌧️
+81°F
31 May
🌫️
+82°F
In May 2023 San Salvador had 4 sunny days, 12 cloudy days, and 5 rainy days. The average maximum temperature was +90°F, with an absolute maximum of +95°F and a minimum of +81°F. The average humidity was 70%, with a maximum of 100% and a minimum of 29%. The average wind speed was 1 m/s, with a maximum of 8 m/s and a minimum of 0 m/s.
Are you planning a trip in May?

Climate Change Over the Years

This is how San Salvador climate has changed over the last 43 years.

The climate in San Salvador in May has not changed that much over the last 43 years.

The average temperature was the lowest in 1984 (+82°F) and the highest in 2016 (+86°F). The driest year was 2001 with only 1181 mm of rainfall, and the wettest year was 2020 with 3143 mm.

FAQ

Frequently asked questions about the weather in San Salvador in May:

Is May a good time to visit San Salvador?

It’s always a good time to visit San Salvador, but the weather is changeable in May, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in San Salvador in May?

May is warm in San Salvador. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is San Salvador rainy in May?

San Salvador is often rainy in May. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in San Salvador in May?

Usually, it’s not very sunny in San Salvador in May, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Monthly weather in San Salvador

Source of the data

For this page, we’ve looked at the typical weather in San Salvador, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.