Days, months, and seasons in Spanish look simple on the surface, yet they follow a set of rules that English speakers often miss. The most common trouble spots are lowercase spelling, the use of articles with days, the date pattern with de, and a few forms that change depending on whether the meaning is one day or a repeated habit. This page brings those patterns together in one place, with clear vocabulary, natural sentence models, and grammar notes that support real use.
What Learners Usually Need First
- The exact forms for all seven days, all twelve months, and the four seasons.
- Natural patterns for saying “on Monday”, “every Friday”, “in July”, and “in winter”.
- The standard way to write and say a Spanish date.
- Small details that matter in real writing, such as lowercase forms, accent marks, and calendar abbreviations.
Days of the Week in Spanish
Los dĂas de la semana are used very often in schedules, class timetables, work plans, travel dates, and simple conversation. In Spanish, these words stay in lowercase unless they begin a sentence. Another point matters just as much: they often appear with the article el or los, which is different from English usage.
| Spanish | English | Natural Pattern | Example |
|---|---|---|---|
| lunes | Monday | el lunes | Trabajo el lunes. |
| martes | Tuesday | el martes | La clase es el martes. |
| miércoles | Wednesday | los miércoles | Estudio español los miércoles. |
| jueves | Thursday | este jueves | Nos vemos este jueves. |
| viernes | Friday | el viernes | Llego el viernes. |
| sábado | Saturday | los sábados | Descanso los sábados. |
| domingo | Sunday | el domingo | Salimos el domingo. |
- The Spanish week usually begins on Monday in calendar use.
- All days are masculine, so forms such as el lunes and los martes are normal.
- lunes, martes, miércoles, jueves, viernes do not change in the plural after the article: el lunes → los lunes.
- sábado and domingo add -s in the plural: los sábados, los domingos.
- To say a repeated action, Spanish often uses los + day: Los viernes estudio en casa.
The contrast between one occasion and repetition is worth remembering. El lunes usually points to one Monday, while los lunes means “on Mondays” or “every Monday.” That small shift makes Spanish sound much more natural in daily use.
Useful Calendar Abbreviations
One-letter: L, M, X, J, V, S, D
Two-letter: Lu, Ma, Mi, Ju, Vi, Sa, Do
The form X for miércoles is common in calendars because M is already used for martes.
Months of the Year in Spanish
Los meses del año are easy to recognize for many learners because several forms look close to English. Even so, Spanish keeps its own writing pattern. Months stay lowercase, they usually follow the preposition en, and in dates they come after the day number.
- enero — January
- febrero — February
- marzo — March
- abril — April
- mayo — May
- junio — June
- julio — July
- agosto — August
- septiembre — September
- octubre — October
- noviembre — November
- diciembre — December
- Use en + month: en enero, en julio, en diciembre.
- Months are written in lowercase: abril, not Abril in normal running text.
- The common written date order is day + de + month + de + year.
- Years are normally written with Arabic numerals: 2026, 1998, 2010.
| English Meaning | Spanish Form |
|---|---|
| in March | en marzo |
| on 13 July 2008 | 13 de julio de 2008 |
| today is 5 May | Hoy es 5 de mayo |
| my birthday is in November | Mi cumpleaños es en noviembre |
The first day of the month deserves its own note. Both primero de enero and uno de enero are accepted. In much of Latin America, primero is very common. In Spain, uno is also widely used. For the rest of the month, Spanish normally uses cardinal numbers: dos de enero, tres de enero, veintidĂłs de abril.
Seasons in Spanish
Las estaciones appear in weather talk, travel planning, school terms, and general time reference. Spanish usually combines them with en, as in en verano or en invierno. Their grammatical gender also matters, because primavera behaves differently from the other three.
la primavera
spring
en primavera
el verano
summer
en verano
el otoño
autumn / fall
en otoño
el invierno
winter
en invierno
- primavera is feminine: la primavera.
- verano, otoño, and invierno are masculine.
- The most common general pattern is en + season: en verano viajo mucho, en invierno hace frĂo.
- The form otoño includes the letter ñ, which should never be replaced with a simple n.
How Dates Are Usually Said
When Spanish moves from isolated vocabulary to real calendar language, a few sentence patterns come up again and again. These forms are short, practical, and easy to reuse in class, travel, and work settings.
| Use | Spanish | Meaning |
|---|---|---|
| Ask the day | ÂżQuĂ© dĂa es hoy? | What day is today? |
| Say the day | Hoy es lunes. | Today is Monday. |
| Ask the date | ¿Cuál es la fecha de hoy? | What is today’s date? |
| Say the date | Hoy es 12 de octubre. | Today is October 12. |
| One specific day | el martes | on Tuesday |
| Repeated day | los martes | on Tuesdays |
| Month | en abril | in April |
| Season | en invierno | in winter |
- el + day = one day or a planned event: La reuniĂłn es el jueves.
- los + day = a repeated habit: Los jueves tengo clase.
- en + month = month reference: Viajamos en agosto.
- en + season = season reference: Nieva en invierno.
- day + de + month + de + year = full written date: 18 de febrero de 2026.
Accent Marks and Spelling Details
These words are basic, but spelling still matters. A small mark can make a familiar form look wrong on a calendar, worksheet, or formal text. For that reason, learners should pay close attention to accent marks and to the letter ñ.
- miércoles keeps its accent mark.
- sábado keeps its accent mark.
- otoño keeps the letter ñ.
- The names of days, months, and seasons are normally written in lowercase.
Mistakes Learners Often Make
- Incorrect: en lunes
Natural: el lunes - Incorrect: Martes in the middle of a sentence
Natural: martes - Incorrect: julio 13 as the usual written pattern
Natural: 13 de julio - Incorrect: treating los lunes and el lunes as the same idea
Natural: one points to a specific day, the other to repetition - Incorrect: dropping the accent in miércoles or sábado
Natural: keep the written form complete
Sentence Models You Can Reuse
- Hoy es martes.
- La entrevista es el viernes.
- Trabajo desde casa los miércoles.
- Mi examen es en junio.
- Nos gusta viajar en verano.
- La fecha es 15 de septiembre de 2026.
- Mi cumpleaños es el primero de mayo.
- En España, las clases empiezan en septiembre en muchos contextos.
- Siempre descanso los domingos.
- Hace frĂo en invierno.
Frequently Asked Questions
Are Days, Months, and Seasons Capitalized in Spanish?
No. In normal Spanish writing, days, months, and seasons are usually written in lowercase. They take a capital letter only when sentence position or a proper name requires it.
How Do You Say “On Monday” in Spanish?
The usual form is el lunes. Spanish normally uses the article with days of the week in this pattern, not the preposition that English uses.
What Is the Difference Between El Lunes and Los Lunes?
El lunes usually refers to one specific Monday. Los lunes usually means “on Mondays” or “every Monday.”
How Are Dates Normally Written in Spanish?
A common pattern is 13 de julio de 2008. The day comes first, the month follows in lowercase, and the elements are linked with de.
Is It Primero de Enero or Uno de Enero?
Both forms are accepted. Primero de enero is very common in much of Latin America, while uno de enero is also common in Spain.
Sources
- Real Academia Española — Capitalization of Months, Days of the Week, and Seasons
- Real Academia Española — Days of the Week
- Real Academia Española — “Primero de Enero” or “Uno de Enero”
- Real Academia Española — Writing Dates with Words or Numerals
- Instituto Cervantes — Time Reference Patterns at A1–A2 Level
- Bowdoin College — Dates, Seasons, and Weather in Spanish