Weather in San Martín - 14-day forecast

Forecast updated: Monday 2 NovemberWeather history: NASA POWER · 1981-2025

Weather in the coming days

What will the week bring? San Martín

3 November San Martín: the high will be about 30°C and the low 20°C. Light rainfall - around 2.8 mm. 4 November it will be warmer: with a high of about 32°C.

30°C

maximum on Tue 3 Nov

Temperature, rainfall and historical comparison

Weather forecast compared with previous years

Choose a day to see the details. Temperatures show the daily high and low.

Forecast: daily highTypical range 1991-2020

Selected day in detail

Tuesday 3 November

Daily high30°CUsually 27-30°C

Daily low20°CColdest part of the day

Rainfall total2.8 mmLight rainfall

Maximum wind speed12 km/hForecast wind speed

Within the usual range. The historical comparison uses daily highs at this time of year. The daily rainfall total shows the amount of rain forecast across the full day.

Full day-by-day forecast - table

14-day forecast: San Martín
Date	Max. / min.	Rain	Typical daily high	Max. wind
Tuesday 3 November	30° / 20°	2.8 mm	27-30°C	12 km/h
Wednesday 4 November	32° / 20°	2.7 mm	27-30°C	15 km/h
Thursday 5 November	31° / 21°	1.8 mm	27-30°C	15 km/h
Friday 6 November	31° / 21°	0.2 mm	27-30°C	13 km/h
Saturday 7 November	31° / 21°	1.6 mm	27-30°C	13 km/h
Sunday 8 November	29° / 20°	4.4 mm	27-30°C	7 km/h
Monday 9 November	28° / 17°	0.4 mm	27-30°C	7 km/h
Tuesday 10 November	27° / 17°	0.3 mm	27-30°C	11 km/h
Wednesday 11 November	26° / 14°	4.5 mm	27-31°C	10 km/h
Thursday 12 November	26° / 14°	0.7 mm	27-31°C	8 km/h
Friday 13 November	27° / 15°	1.6 mm	27-31°C	6 km/h
Saturday 14 November	28° / 16°	3.3 mm	27-31°C	12 km/h
Sunday 15 November	29° / 16°	2.6 mm	27-31°C	8 km/h
Monday 16 November	29° / 17°	0.8 mm	27-31°C	7 km/h

What stands out this week?

Hot days and overnight relief

4 of 7 days ≥30°C

On 5 days, the minimum temperature will stay at or above 20°C.

Temperature changes

No sharp cooling

The first 7 forecast days show no day-to-day drop of 3°C or more in the high.

Will it rain?

5 days with rain ≥1 mm

7-day total: 13.9 mm. Across 45 historical seasons, the typical range for the same dates was 2-16 mm.

This summary covers the first 7 forecast days. A rainy day has at least 1 mm of rain. The historical comparison shows how often such days occurred in previous years.

Weather history 1981-2025

The same week in previous years

NASA POWER

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 3-9 Nov period averaged 29°C by day. The coolest year was 2010 (24°C) and the warmest was 1986 (34°C). The current forecast averages 30°C - higher than in 73% of historical years.

How do we compare the forecast with history?

The forecast chart band shows the 20th-80th percentiles of NASA POWER daily highs from 1991-2020, using the date and a ±7-calendar-day window. The line shows the forecast daily high. The year-by-year chart compares average highs over the same seven dates.

NASA POWER (MERRA-2) data describe conditions in the grid cell covering the location. Elevation and local conditions can affect the comparison.

NASA POWER source and methodology

Plan your trip

Travel offers: San Martín

Partner offers

What else should you know before travelling?

Beyond the forecast period

What weather is typical in the following weeks?

For dates beyond the 14-day forecast, we show typical conditions based on historical data.

Tue 17 Nov - Mon 30 Nov28°C / 18°Cusual daily high / low

Tue 1 Dec - Thu 17 Dec29°C / 18°Cusual daily high / low

Average of the daily medians for the following dates from 1991-2020. A comparison based on historical data.

Downloadable forecast graphic

San Martín - 14-day weather forecast infographic

Detailed weather forecast for San Martín, El Salvador: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

UV index in San Martín - is it safe to sunbathe?

Today the UV index in San Martín is 8 (high) - unprotected fair skin can burn in about 25 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

San Martín weather through the year

San Martín weather through the year
Month	Day	Night	Chance of rain
January ★	31°C	18°C	1%
February ★	32°C	19°C	2%
March	33°C	20°C	4%
April ★	32°C	21°C	12%
May	31°C	22°C	33%
June	30°C	21°C	50%
July	31°C	21°C	45%
August	31°C	20°C	51%
September	29°C	21°C	57%
October	30°C	21°C	46%
November ★	30°C	19°C	12%
December ★	31°C	19°C	3%

★ - months most often recommended for travel

Warmest, driest months on average: January, February, April, November.

Upcoming public holidays in El Salvador: Christmas Day — 25 December · New Year's Day — 1 January · Holy Thursday — 25 March.

Nearby and related places

CojutepequeSan VicenteIlopangoApopaZacatecolucaSan MiguelSanta AnaSanta Tecla

Weather and travel dates: San Martín

Based on the historical data in the climate table for this location.

Warmest months

March

Average daytime temperature: 33°C

Coolest months

September

Average daytime temperature: 29°C

Lowest share of days with precipitation

January

Share of days with precipitation: 1%

Before you travel

Check the forecast daytime and nighttime temperatures, precipitation and current warnings. Use them to choose clothing and plan outdoor activities.

Official travel information

Select your destination on the government website and check the latest advice. Entry requirements depend on factors including citizenship and the purpose of your trip.

FAQ - San Martín weather

What will the weather be like today and tomorrow?