How to group posts by months and add pagination?

Try this code

                                            <?php

                                        $catnam = '1';

                                        $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
                                        // the total of registers to show on each page
                                        $showp = 4;

                                        wp_get_archives("type=monthly&showposts=$showp&paged=$paged");     


                                        while (have_posts() ) : the_post();?>

                                         <h4><a href="https://wordpress.stackexchange.com/questions/131770/<?php echo get_permalink(); ?>"><?php the_title();?></a></h4>

                                         <?php endwhile;?>

                                         <?php
                                            global $wp_rewrite;
                                            $paginate_base = get_pagenum_link(1);
                                            if (strpos($paginate_base, '?') || ! $wp_rewrite->using_permalinks()) {
                                                $paginate_format="";
                                                $paginate_base = add_query_arg('paged', '%#%');
                                            } else {
                                                $paginate_format = (substr($paginate_base, -1 ,1) == "https://wordpress.stackexchange.com/" ? '' : "https://wordpress.stackexchange.com/") .
                                                    user_trailingslashit('page/%#%/', 'paged');;
                                                $paginate_base .= '%_%';
                                            }

                                            echo '<div id="pagination">';
                                            echo paginate_links( array(
                                                'base' => $paginate_base,
                                                'format' => $paginate_format,
                                                'total' => $wp_query->max_num_pages,
                                                'mid_size' => 10,
                                                'current' => ($paged ? $paged : 1),
                                                'type' => '',
                                                'prev_text' => __('<p class="readmore">&laquo; Previous</p>', 'default'),
                                                'next_text' => __('<p class="readmore">Next &raquo;</p>', 'default'),
                                            ));
                                            echo "</div>";
                                        ?>

Related Posts:

  1. How to display pagination links for WP_User_Query?
  2. How to show a single post on the front page but have normal paging?
  3. How to add CSS Class to previous_post_link or get previous/next post link URL
  4. Aggregate comments, with pagination
  5. Implementing a general Table of Content across single paginated post pages
  6. Strange paginate_links behavior. First page link is always whatever page I’m on, all other links are correct
  7. List posts based on first letter of posts
  8. Pagination for sub-pages
  9. How to implement pagination eg. newer – 3 – 4 – 5 – 6 – 7 – older
  10. Custom loop pagination issue ( pagination not showing up )
  11. Paginate tags page
  12. Category pagination shows same posts
  13. How to display next and prev pagination links with WP_User_Query?
  14. Custom taxonomy list and sortby letter pagination problem
  15. WordPress Pagination not displaying posts after certain page
  16. paginate_links() outputs extra empty pages on custom loop
  17. add spans and characters into paginate_links
  18. Show next / previous text (button) all the time
  19. wordpress Next/Previous post in same category not working
  20. Pagination difficulty using custom query in genesis-based custom theme
  21. Placing Ads after every 10th Post with Infinite Scroll
  22. How to implement pagination in backward way eg. first – 20 – 19 – 18 – … – 3 – 2 – 1 – last
  23. WordPress Pagination not working, any ideas?
  24. Next & Previous (Pagination in this case) Not Appearing
  25. Limit Timber pagination number items
  26. List all posts by year with pagination
  27. WordPress wp_link_pages show only next/prev link
  28. Altering next_posts_link(); and previous_posts_link();
  29. Pass additional parameter in the URL
  30. Post timeline (pagination with date, not numbers)
  31. Why do next pages load the same content rather then older articles?
  32. How to disable pagination (next/previous links) on post type archive?
  33. Nested Pagination
  34. Pagination stopped working after assigning custom page template to new page (different slug)
  35. I want to remove numbers from the_posts_pagination function
  36. Wpdb result with pagination
  37. Yoast’s rel=“next” & rel=“prev” tag don’t work on static homepage’s paginated pages
  38. Using paginate_links() to generate “01, 02, 03, 04” paginations
  39. Pagination not working on custom page
  40. 404 when using pagination in a category
  41. Authors list Pagination : result set from $wpdb->get_results()
  42. WP-PageNavi on Custom page template not working
  43. Paginated Archives or Loop by Month
  44. Pagination Not Working on `WP_Query` Archive Page
  45. How do I make my pagination work?
  46. How to use custom previous/next link ?
  47. How to paginate a list of child pages
  48. Show content based on page number
  49. Pagination issue in archive.php
  50. How to use pagination?
  51. How to get category/tag in URL for Pagination links?
  52. Pagination on and tag.php not working
  53. Include a leading zero in pagination
  54. Pagination not work on page but work on category
  55. Can I use paginate_links() to add a pagination list, yet prevent it from inserting links?
  56. Custom category.php paging shows the same posts
  57. Pagination Links showing incorrect previous page number
  58. How to limit page pagination… again
  59. Conditional pagination li’s
  60. Paginate Links – Mid Size Less Than 2
  61. Problem when I try to insert pagination
  62. Different page template for paginated content?
  63. tax_query does not work with pagination with custom query (both wp_query and query_posts())
  64. Pagination for multiple queries merging into one Loop
  65. paginate_comments_links() not working
  66. Adding paging to get_posts()
  67. Can I paginate this get_attachment query?
  68. How to Show Next-Previous Link Only
  69. WordPress static home page pagination not working
  70. How to create a WordPress gallery with pagination
  71. Broken pagination links on WP 4.9.10 blog pages
  72. Excluding posts without affecting the number of posts per page
  73. get_next_posts_page_link adds Inexistent directories
  74. How to add post page pagination to template part?
  75. why pagination not working in page template
  76. Custom pagination in wp
  77. 404 page not found on pagination in home page while navigating to next page
  78. Pagination in Archives
  79. Only show pagination when post count exceeds show post
  80. Pagination – linking back to base page – Page 1
  81. Custom Pagination shows same posts on each page
  82. Numbered pagination showing all numbers instead of paginated blocks
  83. Show next and previous page number
  84. Search pagination link redirecting to a link that doesn’t work with pagination
  85. Custom Query & Rewritten URL Pagination 404
  86. Adding pagination to query for custom page
  87. Main page paginate_links issue
  88. Custom pagination generates title 404
  89. WordPress creating 404s under blog tags
  90. Intercepting $_GET variable from custom pagination
  91. Pagination work! But title still says “Page Not Found”
  92. WordPress pagination URL posts not load
  93. Next / Previous Posts not working
  94. Default pagination in Home/Front page
  95. Use cookies in pagination
  96. Making a Killer wp_link_pages
  97. Always show Next and Previous button in wp_link_pages ?
  98. pagination leads to 404 page
  99. Show pagination in WP_Query
  100. Search pagination rewrite to fix 404