How Rare Is My Birthday Month? : Have you ever wondered how rare your birthday month really is? While every birthday is special, some months are statistically rarer than others based on long-term birth patterns.

Births are not evenly distributed throughout the year. Certain months consistently have fewer births, while others are much more common. This page helps you discover how rare your birthday month is using aggregated birth statistics.

Use our Birthday Month Rarity Calculator to instantly see where your birth month ranks.

Why Are Some Birthday Months Rarer Than Others?

Birth patterns are influenced by several real-world factors, including:

Seasonal conception trends
Weather and climate
Holidays and cultural habits
Planned and scheduled births

Because of these factors, some months naturally end up having fewer births, making them statistically rarer.

🎂 How Rare Is Your Birthday Month?

Pick your date of birth and instantly see how rare your birthday month is.

Your Date of Birth

Also use our other birthday tools to know interesting facts about your birthday:

How Birthday Month Rarity Is Calculated

Birthday month rarity is calculated by comparing the percentage of total births that occur in each month across many years.

The calculator works by:

Analyzing aggregated birth statistics
Comparing all 12 months
Ranking each month from rarest to most common

For each month, the calculator shows:

The estimated percentage of people born in that month
A rarity rank out of 12
A rarity score for easy comparison

No personal data is collected or stored.

How to Use Birthday Month Rarity Calculator

Select your birth month from the dropdown menu.
View your results instantly, including:
- The percentage of people born in your month
- Your birth month’s rarity rank
Compare different months to see which are rarest and most common.

No signup or personal information is required.

What Is the Rarest Birthday Month?

Based on long-term birth statistics:

February is generally the rarest birthday month.

This is mainly because:

It has fewer days than other months
It consistently records fewer births overall

People born in February share their birth month with fewer people compared to most other months.

What Is the Most Common Birthday Month?

The most common birthday month is typically:

September

Higher birth rates in September are often linked to conception patterns earlier in the year, making it the most common birth month across many datasets.

Does Having a Rare Birthday Month Mean Anything?

A rare birthday month simply means fewer people were born during that time of the year. It does not affect personality, luck, or success.

Many people enjoy learning their birthday month rarity for:

Fun facts
Birthday trivia
Sharing with friends and family

Is This Birthday Month Data Accurate?

The calculator uses aggregated public birth statistics collected over multiple years. While exact figures can change slightly, the relative rarity of each month remains stable, making this tool reliable for comparison.

Finding out how rare your birthday month is is a fun and informative way to explore birth statistics. Whether your birth month is rare or common, every birthday is unique.