Caitlin vs Summer
Caitlin and Summercompared on official birth-registration statistics and Namewise's recorded data. This page states what each name's record shows — it never picks a winner or scores one name against the other.
Head to head
Ranks are only compared within one published list and one year. Two ranks from different years, from a boys' and a girls' list, or from different registrars are not comparable, so they are not placed side by side.
New South Wales, Australia · Girls
In 2013, Caitlin was ranked #78 and Summer #54 among girls in New South Wales, Australia.
New Zealand · Girls
In 2014, Caitlin was ranked #96 and Summer #54 among girls in New Zealand.
Scotland · Girls
In 2024, Caitlin was ranked #333 and Summer #96 among girls in Scotland.
England and Wales · Girls
In 2024, Caitlin was ranked #610 and Summer #112 among girls in England and Wales.
Republic of Ireland · Girls
In 2025, Caitlin was ranked #247 and Summer #115 among girls in Republic of Ireland.
Northern Ireland · Girls
In 2024, Caitlin was ranked #119 and Summer #161 among girls in Northern Ireland.
Caitlin and Summer over time
Caitlin and Summer appear together in 5 published lists, across 103 years of shared records. Caitlin held the stronger position in more years in 3 of them, Summer in 2.
The order between them changed and held in 4 of those lists — a change in that published list, never a claim that one name displaced the other.
Caitlin reached its own highest recorded position earlier in 5 of those lists, and Summer in none. Each position is a place inside its own list, so this compares when they peaked and never how high.
Counted list by list. Two names in the same published list are measured on the same scale in the same year, so those comparisons are real — but positions from different lists are not, so nothing here is combined into an overall standing.
How this pair is related
The relationship kinds these two qualify for, each under its own stated rule. Every one is drawn from a list they both appear in.
- One took the other's place near the top
In New Zealand · Girls, Summer moved into the top 50 at #34 in 2010 as Caitlin fell out of it to #62, having been #39 the year before.
- One moved ahead of the other
In 2008, Summer moved ahead of Caitlin in England and Wales · Girls — #34 and #44 the year before became #44 and #23.
List by list
England and Wales · Girls29 shared years, 1996–2024
Caitlin held the stronger position in 12 of those years, Summer in 17.
Highest recorded here: Caitlin #21 in 2001, Summer #23 in 2008.
The order changed in 2008: Summer moved ahead. In 2007 they stood at #34 and #44; by 2008 that had become #44 and #23.
Most recent shared year, 2024: Caitlin #610, Summer #112.
Northern Ireland · Girls26 shared years, 1998–2024
Caitlin held the stronger position in 26 of those years, Summer in 0.
Highest recorded here: Caitlin #3 in 2000, Summer #65 in 2008.
The order between them never changed and held in this list.
Most recent shared year, 2024: Caitlin #119, Summer #161.
Republic of Ireland · Girls23 shared years, 2003–2025
Caitlin held the stronger position in 15 of those years, Summer in 8.
Highest recorded here: Caitlin #31 in 2003, Summer #115 in 2025.
The order changed in 2018: Summer moved ahead. In 2017 they stood at #154 and #162; by 2018 that had become #179 and #142.
Most recent shared year, 2025: Caitlin #247, Summer #115.
New Zealand · Girls16 shared years, 1996–2014
Caitlin held the stronger position in 12 of those years, Summer in 4.
Highest recorded here: Caitlin #10 in 1998, Summer #28 in 2011.
The order changed in 2010: Summer moved ahead. In 2009 they stood at #39 and #52; by 2010 that had become #62 and #34.
Most recent shared year, 2014: Caitlin #96, Summer #54.
New South Wales, Australia · Girls9 shared years, 2005–2013
Caitlin held the stronger position in 3 of those years, Summer in 6.
Highest recorded here: Caitlin #24 in 2005, Summer #38 in 2010.
The order changed in 2008: Summer moved ahead. In 2007 they stood at #34 and #50; by 2008 that had become #50 and #39.
Most recent shared year, 2013: Caitlin #78, Summer #54.
Two names moving past each other in a ranking is a fact about the ranking. Namewise does not claim one name displaced the other, that families chose between them, or that either influenced the other — none of that is in this data.
Side by side
| Field | Caitlin | Summer |
|---|---|---|
| Record type | Editorially researched profile | Official statistical record (evidence-only) |
| Gender usage | female | female |
| Meaning | An Anglicized form of Caitlín, itself a cognate of Katherine/Catalina traditions across Europe. | Not yet recorded |
| Origin | Irish, cognate of the wider Katherine family | Not yet recorded |
| Pronunciation | /ˈkeɪt.lɪn/ | Not yet recorded |
| Syllables | 2 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ |
| Most recent popularity observation | Republic of Ireland · Girls #247 (2025) | New South Wales, Australia · Girls #89 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | Not yet recorded |
| Spelling simplicity (demonstration score) | 82/100 | 88/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Caitlin has a recorded origin (Irish, cognate of the wider Katherine family); Summer does not have one recorded yet.
- Caitlin and Summer both have 2 syllables.
- A meaning is recorded for Caitlin; Summer doesn't have one written yet.
- Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ.
How each name got here
Caitlin
Popularity journey
First recorded1967
First recorded at #393 among girls in Republic of Ireland in 1967 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1997–2024
Highest recorded position: #2 among girls in Northern Ireland, in 2002 (recorded 1997–2024).
Northern Ireland · Girls
Most recent2025
Most recently recorded at #247 among girls in Republic of Ireland, in 2025.
Republic of Ireland · Girls
Summer
Popularity journey
First recorded1996
First recorded at #206 among girls in England and Wales in 1996 — the earliest year that source publishes this name, not necessarily the earliest it was used.
England and Wales · Girls
Highest recorded1996–2024
Highest recorded position: #23 among girls in England and Wales, in 2008 (recorded 1996–2024).
England and Wales · Girls
Most recent2025
Most recently recorded at #89 among girls in New South Wales, Australia, in 2025.
New South Wales, Australia · Girls